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98 vulnerabilities found for envoy by envoyproxy
CVE-2026-73511 (GCVE-0-2026-73511)
Vulnerability from cvelistv5
Published
2026-09-21 20:20
Modified
2026-09-22 15:39
Severity ?
VLAI Severity ?
EPSS score ?
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy normally matches the raw request path, while servlet backends such as Apache Tomcat strip semicolon matrix parameters from each path segment before resolving the resource. Envoy's ignore_path_parameters_in_path_matching option instead truncates at the first semicolon and still does not match per-segment backend behavior. A remote client can use a parameterized protected segment, or a parameter on an earlier segment, to make Envoy select an unprotected fallback while the backend resolves the protected resource. The relevant scope boundary is that the bypass requires both a path-based Envoy decision and a backend that strips semicolon parameters per segment. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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}
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CVE-2026-73553 (GCVE-0-2026-73553)
Vulnerability from cvelistv5
Published
2026-09-21 20:18
Modified
2026-09-22 13:21
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-436 - Interpretation Conflict
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, When ignore_path_parameters_in_path_matching is enabled, Envoy's router strips the semicolon suffix before matching but the RBAC url_path matcher evaluates the raw path. A downstream request such as /admin;x can therefore miss a DENY rule for /admin while the router still selects the protected /admin backend. The inconsistent canonicalization allows an unauthenticated client to bypass path-based authorization. The relevant scope boundary is that the route option and a path-based RBAC rule must both be present, and the protected route must match after stripping. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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"tags": [
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"tags": [
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"tags": [
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"source": {
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"discovery": "UNKNOWN"
},
"title": "Envoy: RBAC Authorization Bypass via Path Parameters"
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CVE-2026-73551 (GCVE-0-2026-73551)
Vulnerability from cvelistv5
Published
2026-09-21 20:17
Modified
2026-09-28 20:41
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-647 - Use of Non-Canonical URL Paths for Authorization Decisions
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's URL normalization does not recognize dot and dotdot path segments when they carry semicolon parameters. A request such as /user/..;foo=bar/admin is therefore not canonicalized to /admin even when path normalization is enabled. If an upstream interprets the segment according to RFC 3986 while Envoy applies routing or RBAC to the uncollapsed path, a remote client can cause path confusion and bypass path-based security policy. The relevant scope boundary is that the security consequence depends on a downstream/upstream path interpretation mismatch or a path-based Envoy decision. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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"x_refsource_MISC"
],
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},
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"tags": [
"x_refsource_MISC"
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"x_refsource_MISC"
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},
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"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.37.6"
},
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"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.38.4",
"tags": [
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"discovery": "UNKNOWN"
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"title": "Envoy: Path normalization does not handle dot and dotdot segments with parameters"
}
},
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CVE-2026-73546 (GCVE-0-2026-73546)
Vulnerability from cvelistv5
Published
2026-09-21 19:53
Modified
2026-09-21 20:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's /stats?format=html admin endpoint uses StatsHtmlRender, which sanitizes string statistic values but emits statistic names without HTML encoding. A data-plane component such as grpc_stats with stats_for_all_methods enabled can incorporate attacker-controlled path segments into cached dynamic statistic names. When an operator views the HTML stats page, the stored name can execute script with the admin interface's origin and issue privileged same-origin requests. The relevant scope boundary is that the admin interface must be browser-accessible and an enabled component must persist attacker-influenced text in statistic names. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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"url": "https://github.com/envoyproxy/envoy/commit/9484e17c34353662f9bfd30c74f61fa8c9ee7b83"
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},
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"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.37.6"
},
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"tags": [
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},
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"tags": [
"x_refsource_MISC"
],
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"discovery": "UNKNOWN"
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"datePublished": "2026-09-21T19:53:21.443Z",
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CVE-2026-73512 (GCVE-0-2026-73512)
Vulnerability from cvelistv5
Published
2026-09-21 19:51
Modified
2026-09-22 13:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's HttpDatagramHandler caches the current RequestDecoder when Capsule Protocol is enabled. Stream recreation, including an internal redirect, replaces the ActiveStream and updates EnvoyQuicServerStream but does not update the handler's cached pointer. A subsequent HTTP/3 datagram can call decodeData through the freed decoder, causing invalid virtual dispatch and a process crash. The relevant scope boundary is that hTTP/3 datagrams and Capsule Protocol must be enabled, and the request must enter a stream-recreation path such as an internal redirect. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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},
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"name": "https://github.com/envoyproxy/envoy/commit/c0e46dabc3ac286bbe608e9274776555911aadb9",
"tags": [
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],
"url": "https://github.com/envoyproxy/envoy/commit/c0e46dabc3ac286bbe608e9274776555911aadb9"
},
{
"name": "https://github.com/envoyproxy/envoy/commit/f2417eec2ff49abe243d484ded916fbc2faca38d",
"tags": [
"x_refsource_MISC"
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"url": "https://github.com/envoyproxy/envoy/commit/f2417eec2ff49abe243d484ded916fbc2faca38d"
},
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"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.36.10",
"tags": [
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},
{
"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.37.6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.37.6"
},
{
"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.38.4",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.38.4"
},
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"tags": [
"x_refsource_MISC"
],
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}
],
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"discovery": "UNKNOWN"
},
"title": "Envoy: use-after-free in QUIC on internal redirects"
}
},
"cveMetadata": {
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"assignerShortName": "GitHub_M",
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"datePublished": "2026-09-21T19:51:23.229Z",
"dateReserved": "2026-08-12T19:00:33.736Z",
"dateUpdated": "2026-09-22T13:27:46.213Z",
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CVE-2026-73550 (GCVE-0-2026-73550)
Vulnerability from cvelistv5
Published
2026-09-21 19:49
Modified
2026-09-28 20:37
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy copies every decoded HTTP/2 Host header value before discarding it when :authority is already present. The discarded value bypasses saveHeader, so its bytes and count are not charged against request header limits. An unauthenticated client can use HPACK indexing to submit many references to a large Host value across a bounded number of streams, forcing extreme header-copy allocation and causing the proxy to be out-of-memory killed. The relevant scope boundary is that the demonstrated amplification uses HTTP/2 HPACK and the duplicate Host discard behavior. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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}
],
"metrics": [
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},
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"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/envoy/commit/3fd0ffee7ac87adf3bc6e421656bb96310512300"
},
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"tags": [
"x_refsource_MISC"
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},
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"tags": [
"x_refsource_MISC"
],
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},
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"tags": [
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CVE-2026-73547 (GCVE-0-2026-73547)
Vulnerability from cvelistv5
Published
2026-09-21 19:47
Modified
2026-09-22 15:39
Severity ?
VLAI Severity ?
EPSS score ?
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's ext_authz filter assumes that a request contains a :path pseudoheader when applying query_parameters_to_set or query_parameters_to_remove from an authorization response. A path-less CONNECT request makes request_headers_->Path() return null, and Filter::onComplete dereferences that pointer while parsing the query string. An unauthenticated downstream client can crash the Envoy process when the filter and authorization response use query-parameter mutation. The relevant scope boundary is that the deployment must accept path-less CONNECT and configure ext_authz query-parameter mutation. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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CVE-2026-48521 (GCVE-0-2026-48521)
Vulnerability from cvelistv5
Published
2026-09-21 19:44
Modified
2026-09-21 20:04
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's ProdClusterManagerFactory::allocateConnPool dereferences transport_socket_options while selecting an HTTP/3 connection pool without first checking whether the pointer is null. LoadBalancerContext implementations used by synthetic, mirror, health-check, and async-client calls can return no transport-socket options. With auto_config and HTTP/3 enabled, routine traffic reaching one of those contexts can crash an Envoy worker. The relevant scope boundary is that the affected branch requires HTTP/3 in the protocol set and a context that supplies no transport-socket options. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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CVE-2026-73549 (GCVE-0-2026-73549)
Vulnerability from cvelistv5
Published
2026-09-21 19:42
Modified
2026-09-22 13:29
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's Utility::copyInternetAddressAndPort and QUIC client-address paths reconstruct scoped IPv6 addresses through addressAsString and Ipv6Instance. The string includes a percent scope identifier that inet_pton cannot parse, causing an exception or abort. Kernel-provided scoped IPv6 destinations in ORIGINAL_DST transparent-proxy deployments, and affected QUIC connection paths, can therefore terminate the process. The relevant scope boundary is that the HTTP use_http_header override rejects scoped addresses earlier; the advisory's crash path requires a kernel-provided original destination or the affected QUIC path. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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CVE-2026-73513 (GCVE-0-2026-73513)
Vulnerability from cvelistv5
Published
2026-09-21 19:40
Modified
2026-09-28 20:38
Severity ?
VLAI Severity ?
EPSS score ?
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's optional oghttp2 upstream HTTP/2 codec accepts a response trailer HEADERS frame without END_STREAM. Envoy completes and deferred-deletes the ActiveRequest while oghttp2 keeps the stream open, leaving ClientStreamImpl with a dangling response_decoder_ reference. A later frame on the stream can dispatch through the freed object and crash the process. The relevant scope boundary is that the default nghttp2 codec rejects the malformed trailers, and the trigger is upstream-only with oghttp2 enabled. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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CVE-2026-73552 (GCVE-0-2026-73552)
Vulnerability from cvelistv5
Published
2026-09-21 19:37
Modified
2026-09-22 15:39
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy HTTP RBAC accepts RFC-valid opaque header bytes but evaluates safe_regex values with RE2's UTF-8 subject semantics. A downstream client can preserve a prohibited marker and add an unrelated obs-text octet, causing RE2::FullMatch to return false and a negative RBAC policy to treat the invalid subject as an ordinary no-match. A byte-oriented route matcher can still observe the marker, allowing the request to reach a route intended to be denied. The relevant scope boundary is that plain positive ALLOW regexes normally fail closed, and exact, prefix, suffix, and contains matchers are not shown to have this subject-domain failure. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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CVE-2026-73548 (GCVE-0-2026-73548)
Vulnerability from cvelistv5
Published
2026-09-21 19:35
Modified
2026-09-24 22:35
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy forwards data for a configured non-WebSocket HTTP upgrade before the upstream accepts the upgrade. An unauthenticated HTTP/2 client can place a complete HTTP/1.1 request in extended CONNECT data; Envoy downgrades the request, writes the data unframed to a keep-alive HTTP/1.1 upstream, and returns the socket to the shared pool while the smuggled response remains queued. A different downstream client can then receive the attacker's response. The relevant scope boundary is that webSocket upgrades, plain CONNECT, disabled backend keep-alive, per-downstream pools, and max_requests_per_connection set to 1 are not affected by the demonstrated path. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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CVE-2026-50572 (GCVE-0-2026-50572)
Vulnerability from cvelistv5
Published
2026-09-21 19:32
Modified
2026-09-22 13:30
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's HTTP external-authorization client can retain a stale request callback after a request is rejected. When RawHttpClientImpl::onSuccess later processes the authorization response, it can invoke callbacks_ after the callback owner has been destroyed, causing a use-after-free and process crash under production traffic. The relevant scope boundary is that the vulnerable path uses the HTTP ext_authz client; the advisory does not establish the same trigger for unrelated filters. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: < 1.36.10 Version: >= 1.37.0, < 1.37.6 Version: >= 1.38.0, < 1.38.4 Version: >= 1.39.0, < 1.39.1 |
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CVE-2026-48090 (GCVE-0-2026-48090)
Vulnerability from cvelistv5
Published
2026-06-26 18:03
Modified
2026-07-08 19:42
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, the HTTP OAuth2 filter (envoy.filters.http.oauth2) can leave an in-flight async token exchange attached to a downstream stream that has already been torn down. A late AsyncClient completion can still invoke OAuth2Filter methods that use StreamDecoderFilterCallbacks after that object’s lifetime has ended, causing undefined behavior, worker crashes (availability loss), and use-after-free / invalid-vptr failures under AddressSanitizer. This is a memory-safety / lifetime issue in the data plane, not a trivial config bug. Remote code execution is not claimed here; the primary demonstrated impact is DoS via crash and UB; any further impact would be deployment- and allocator-dependent. This vulnerability is fixed in 1.37.5 and 1.38.3.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
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CVE-2026-47220 (GCVE-0-2026-47220)
Vulnerability from cvelistv5
Published
2026-06-26 18:02
Modified
2026-07-15 00:49
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, when the %REQUESTED_SERVER_NAME(X:Y)% is used in log format and host related options is specified, like HOST_FIRST, SNI_FIRST, it's possible to crash Envoy when the specified host header is missing in the request headers. This vulnerability is fixed in 1.37.5 and 1.38.3.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: >= 1.38.0, < 1.38.3 Version: >= 1.37.0, < 1.37.5 |
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CVE-2026-47205 (GCVE-0-2026-47205)
Vulnerability from cvelistv5
Published
2026-06-26 18:01
Modified
2026-06-27 02:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.36.0 until 1.36.9, 1.37.5, and 1.38.3, a Use-After-Free (UAF) vulnerability leading to a sudden segmentation fault exists in Envoy's ext_authz HTTP filter when processing per-route authorization overrides concurrently with rapid downstream client disconnects. During standard request lifecycles, Envoy instantiates the ext_authz filter with a foundational authorization client object (client_). If a matched route dictates a dynamic per-route HTTP or gRPC authorization service override, the filter generates a localized client. In the vulnerable implementation, this transient client aggressively overwrote the default client_ unique pointer by executing client_ = std::move(per_route_client). When a client rapidly establishes and subsequently tears down a stream (such as rapidly refreshing a protected WebSocket endpoint), the downstream triggers the ConnectionManagerImpl::doDeferredStreamDestroy() -> ActiveStream::onResetStream() lifecycle. Envoy immediately sequences Filter::onDestroy() in an attempt to securely abort dispatched asynchronous authorization check transactions via client_->cancel(). By destructing the default client abruptly during initiateCall, a memory lifecycle misalignment occurs within the async client manager. The stream teardown fails to reliably track and cancel the dynamically bound asynchronous authorization tasks, orchestrating a sequence where a late asynchronous callback from the network evaluates against a heavily destroyed ActiveStream validation span, generating a UAF process crash. This vulnerability is fixed in 1.36.9, 1.37.5, and 1.38.3.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: >= 1.38.0, < 1.38.3 Version: >= 1.37.0, < 1.37.5 Version: >= 1.36.0, < 1.36.9 |
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CVE-2026-47692 (GCVE-0-2026-47692)
Vulnerability from cvelistv5
Published
2026-06-26 17:59
Modified
2026-06-26 19:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-130 - Improper Handling of Length Parameter Inconsistency
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.34.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, PROXY Protocol v2 header generator emits TLVs beyond the maximum length of 65535 bytes, causing a mismatch between bytes written and the length field in the header. This can result in smuggled bytes on the upstream request. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: >= 1.38.0, < 1.38.3 Version: >= 1.37.0, < 1.37.5 Version: >= 1.36.0, < 1.36.9 Version: >= 1.34.0, < 1.35.13 |
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CVE-2026-47207 (GCVE-0-2026-47207)
Vulnerability from cvelistv5
Published
2026-06-26 17:52
Modified
2026-06-26 18:30
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.34.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, Envoy crashes if an ext_proc server sends a single gRPC message containing multiple, specially crafted ProcessingResponse messages. This can occur when the first response in the batch causes the gRPC stream object to be destroyed, leading to a use-after-free error when Envoy attempts to process subsequent responses in the same gRPC message. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: >= 1.38.0, < 1.38.3 Version: >= 1.37.0, < 1.37.5 Version: >= 1.36.0, < 1.36.9 Version: >= 1.34.0, < 1.35.13 |
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CVE-2026-48706 (GCVE-0-2026-48706)
Vulnerability from cvelistv5
Published
2026-06-26 17:38
Modified
2026-06-26 19:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.34.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, a vulnerability exists in Envoy's TCP StatsD sink (TcpStatsdSink), where the thread-local flusher buffer can be overflowed by exceptionally long statistic names (e.g., >16KiB). During formatting, TcpStatsdSink reserves a single contiguous memory slice of 16KiB (FLUSH_SLICE_SIZE_BYTES). If formatting a single metric exceeds the remaining capacity, the flusher initiates a buffer rotation but incorrectly continues to allocate another fixed 16KiB slice. If an attacker can trigger a statistic name longer than 16KiB—for example, by sending an HTTP or gRPC request with an extremely long request path (:path) that is recorded by the grpc_stats filter configured with stats_for_all_methods: true—the flusher will attempt to copy the metric name using memcpy operations beyond the allocated heap buffer boundaries. This leads to a heap write overflow, which can cause immediate denial-of-service (process crash) or potential remote code execution (RCE). This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: >= 1.38.0, < 1.38.3 Version: >= 1.37.0, < 1.37.5 Version: >= 1.36.0, < 1.36.9 Version: >= 1.34.0, < 1.35.13 |
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CVE-2026-47204 (GCVE-0-2026-47204)
Vulnerability from cvelistv5
Published
2026-06-26 17:37
Modified
2026-06-29 13:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.26.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, the envoy.filters.http.grpc_stats filter crashes (null pointer dereference / segfault) when a Connect protocol request (Content-Type: application/connect+proto or application/connect+json) hits a direct_response route. A single unauthenticated HTTP request crashes the Envoy process. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: >= 1.38.0, < 1.38.3 Version: >= 1.37.0, < 1.37.5 Version: >= 1.36.0, < 1.36.9 Version: >= 1.26.0, < 1.35.13 |
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CVE-2026-47221 (GCVE-0-2026-47221)
Vulnerability from cvelistv5
Published
2026-06-26 17:35
Modified
2026-06-26 18:33
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.18.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, the router filter contains a null pointer dereference vulnerability when handling HTTP 303 (See Other) internal redirects for body-less non-GET/HEAD requests. When a POST, PUT, DELETE, or PATCH request without a body is sent to a route configured with internal redirect policy that includes 303 in redirect_response_codes, and the upstream responds with HTTP 303, the redirect handling code attempts to drain a request body buffer that was never allocated. This results in a segmentation fault that crashes the entire Envoy process. When route configured with internal_redirect_policy including 303 in redirect_response_codes and upstream must return HTTP 303 response, an unauthenticated attacker can exploit this to cause complete denial of service, terminating all active connections. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: >= 1.38.0, < 1.38.3 Version: >= 1.37.0, < 1.37.5 Version: >= 1.36.0, < 1.36.9 Version: >= 1.18.0, < 1.35.13 |
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CVE-2026-48743 (GCVE-0-2026-48743)
Vulnerability from cvelistv5
Published
2026-06-26 17:34
Modified
2026-06-29 15:20
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, Envoy can translate a downstream HTTP/3 request that is complete at the transport layer (HEADERS with FIN / headers-only close) but still carries a nonzero Content-Length into a complete upstream HTTP/1 request with unresolved body debt. In an HTTP/1 upstream deployment where the origin replies before reading the declared body and keeps the connection reusable, the beginning of the next Envoy-generated upstream request can be consumed as the first request's body. The remaining bytes are then parsed by the origin as a new HTTP/1 request. This was reproduced as a route-bypass/desync: direct /pwn was denied by Envoy, but the second downstream H3 stream received the response for backend-parsed GET /pwn HTTP/1.1. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: >= 1.38.0, < 1.38.1 Version: >= 1.37.0, < 1.37.3 Version: >= 1.36.0, < 1.36.7 Version: >= 1.35.0, < 1.35.11 |
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CVE-2026-48497 (GCVE-0-2026-48497)
Vulnerability from cvelistv5
Published
2026-06-26 17:32
Modified
2026-06-26 18:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-480 - Use of Incorrect Operator
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, in cases where UDP DNS filter is configured with local resolution containing a name with the length of 255 octets or remote resolution for a name of 255 octets long can complete successfully, a query with such name will result in abnormal process termination. The abnormal process termination is triggered by an invalid runtime precondition that the query name is strictly less than 255 octets, contradicting DNS specification rfc1035#section-2.3.4 that the name can be 255 or less octets. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: >= 1.38.0, < 1.38.1 Version: >= 1.37.0, < 1.37.3 Version: >= 1.36.0, < 1.36.7 Version: < 1.35.11 |
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CVE-2026-48044 (GCVE-0-2026-48044)
Vulnerability from cvelistv5
Published
2026-06-26 17:31
Modified
2026-06-26 18:31
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.23.0 until 1.35.11, 1.36.7, 1.37.3, and 1.38.1, a vulnerability has been identified in Envoy's zstd decompressor implementation (ZstdDecompressorImpl). When zstd decompression is enabled, processing a specially crafted, highly compressed zstd payload can lead to massive memory allocation. An attacker can exploit this to cause severe memory exhaustion, potentially resulting in an Out-Of-Memory (OOM) kill and Denial of Service (DoS) for the Envoy proxy. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Version: >= 1.38.0, < 1.38.1 Version: >= 1.37.0, < 1.37.3 Version: >= 1.36.0, < 1.36.7 Version: >= 1.23.0, < 1.35.11 |
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CVE-2026-48042 (GCVE-0-2026-48042)
Vulnerability from cvelistv5
Published
2026-06-26 17:29
Modified
2026-06-29 13:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-1124 - Excessively Deep Nesting
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, destructor of JSON Object results in stack overflow when deeply O(100K) nested objects are present. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.
References
Impacted products
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|---|---|---|---|---|
| envoyproxy | envoy |
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CVE-2026-47778 (GCVE-0-2026-47778)
Vulnerability from cvelistv5
Published
2026-06-26 17:27
Modified
2026-06-27 02:53
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-158 - Improper Neutralization of Null Byte or NUL Character
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, a structural flaw was identified in DefaultCertValidator::verifySubjectAltName where the extracted DNS SAN string is cast to a C-style string using .c_str() before being passed to the Utility::dnsNameMatch() algorithm. If the attacker serves a certificate with a dNSName SAN containing an embedded NUL byte, the helper Utility::generalNameAsString captures the complete string including the NUL. However, when .c_str() evaluates it, implicit conversion to absl::string_view inside dnsNameMatch relies on strlen(), prematurely truncating the evaluation context. Envoy evaluates trucated string against the exact required config_san match and returns true, thereby successfully validating the string with the Nul byte for an upstream routing. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
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|---|---|---|---|---|
| envoyproxy | envoy |
Version: >= 1.38.0, < 1.38.1 Version: >= 1.37.0, < 1.37.3 Version: >= 1.36.0, < 1.36.7 Version: < 1.35.11 |
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CVE-2026-47775 (GCVE-0-2026-47775)
Vulnerability from cvelistv5
Published
2026-06-26 17:23
Modified
2026-06-29 15:20
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, the OAuth2 HTTP filter's encrypt()/decrypt() functions use AES-256-CBC without an authentication tag (no HMAC, no AEAD). The /callback endpoint returns HTTP 302 on successful decryption and HTTP 401 on padding failure, creating a padding oracle. An attacker who obtains the encrypted CodeVerifier cookie can recover the plaintext PKCE code_verifier in ~6,200 requests (~100 seconds), then exchange it with a stolen authorization code to obtain the victim's access token. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
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CVE-2026-47774 (GCVE-0-2026-47774)
Vulnerability from cvelistv5
Published
2026-06-17 16:58
Modified
2026-08-24 12:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.35.11, 1.36.7, 1.37.3, and 1.38.1, a vulnerability in Envoy's HTTP/2 downstream request processing allows an unauthenticated remote client to trigger excessive memory consumption, potentially resulting in OOM termination of the Envoy process and denial of service. The issue arises from the combination of two behaviors. First, cookie header bytes are not fully accounted for during request header size validation in Envoy. Second, HPACK header block limits in oghttp2/quiche are enforced on encoded bytes without a corresponding limit on total decoded header size. Together, these behaviors allow a malicious client to cause large decoded header allocations while bypassing the intended request header size protections. Versions 1.35.11, 1.36.7, 1.37.3, and 1.38.1 contain a fix. No complete workaround is known short of applying a fix. Possible temporary mitigations include disabling downstream HTTP/2 where operationally feasible; enforcing stricter request header and cookie limits before traffic reaches Envoy; and monitoring Envoy memory usage for abnormal growth under HTTP/2 traffic.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
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CVE-2026-26330 (GCVE-0-2026-26330)
Vulnerability from cvelistv5
Published
2026-03-10 19:19
Modified
2026-03-10 20:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, At the rate limit filter, if the response phase limit with apply_on_stream_done in the rate limit configuration is enabled and the response phase limit request fails directly, it may crash Envoy. When both the request phase limit and response phase limit are enabled, the safe gRPC client instance will be re-used for both the request phase request and response phase request. But after the request phase request is done, the inner state of the request phase limit request in gRPC client is not cleaned up. When a second limit request is sent at response phase, and the second limit request fails directly, the previous request's inner state may be accessed and result in crash. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
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CVE-2026-26311 (GCVE-0-2026-26311)
Vulnerability from cvelistv5
Published
2026-03-10 19:14
Modified
2026-03-10 19:34
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, a logic vulnerability in Envoy's HTTP connection manager (FilterManager) that allows for Zombie Stream Filter Execution. This issue creates a "Use-After-Free" (UAF) or state-corruption window where filter callbacks are invoked on an HTTP stream that has already been logically reset and cleaned up. The vulnerability resides in source/common/http/filter_manager.cc within the FilterManager::decodeData method. The ActiveStream object remains valid in memory during the deferred deletion window. If a DATA frame arrives on this stream immediately after the reset (e.g., in the same packet processing cycle), the HTTP/2 codec invokes ActiveStream::decodeData, which cascades to FilterManager::decodeData. FilterManager::decodeData fails to check the saw_downstream_reset_ flag. It iterates over the decoder_filters_ list and invokes decodeData() on filters that have already received onDestroy(). This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
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|---|---|---|---|---|
| envoyproxy | envoy |
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