Common Weakness Enumeration
CWE-248
AllowedUncaught Exception
Abstraction: Base · Status: Draft
An exception is thrown from a function, but it is not caught.
356 vulnerabilities reference this CWE, most recent first.
CVE-2026-85024 (GCVE-0-2026-85024)
Vulnerability from cvelistv5 – Published: 2026-09-04 16:20 – Updated: 2026-09-04 19:30
VLAI
EPSS
VEX
Title
undici vulnerable to Denial of Service via unhandled error in WebSocket permessage-deflate decompression
Summary
undici bundles a WebSocket client whose permessage-deflate size-limit cleanup removes all listeners from the internal zlib inflate stream, including its error listener, while that stream can still emit. When a remote peer sends a compressed payload that crosses the built-in 128 MiB decompressed-payload limit and then contains a malformed DEFLATE byte, the inflate stream emits a data error with no listener attached, which Node.js treats as a fatal unhandled error and terminates the entire process. Exploitation is remote and unauthenticated, requires no application mistake, and is asymmetric, since roughly 130 KB on the wire expands past the limit and crashes the process, and reconnecting can repeat the crash. This affects undici versions from 6.25.0 up to 6.28.1, from 7.28.0 up to 7.29.1, and from 8.1.0 up to 8.10.2. Users should upgrade to undici 6.28.1, 7.29.1, or 8.10.2.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 19:30 UTC
CWE
- CWE-248 - Uncaught Exception
Assigner
openjs
CNA
References
Impacted products
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CVE-2026-85014 (GCVE-0-2026-85014)
Vulnerability from cvelistv5 – Published: 2026-09-04 16:30 – Updated: 2026-09-04 19:30
VLAI
EPSS
VEX
Title
undici vulnerable to Denial of Service via WebSocketStream unclean close
Summary
undici's experimental WebSocketStream client crashes the whole Node.js process when a remote peer closes the TCP connection without a WebSocket close handshake. On an unclean close the internal socket-close handler calls abort on the writable stream unconditionally and discards the returned promise, but per the WHATWG Streams standard aborting a locked writable returns a promise that rejects with a TypeError. Because the application holds a writer on that writable, which is the only way to write, the rejection is never observed and Node's default unhandled-rejection behavior terminates the process. An untrusted server can therefore crash a client with a single abrupt disconnect, with no authentication and no application mistake. This affects undici versions from 7.0.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 19:30 UTC
Assigner
openjs
CNA
References
Impacted products
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CVE-2026-84994 (GCVE-0-2026-84994)
Vulnerability from cvelistv5 – Published: 2026-10-13 19:00 – Updated: 2026-10-14 16:36
VLAI
EPSS
VEX
Title
Qwik: Crashing any Qwik Server via Resource thenable
Summary
Qwik is a performance-focused JavaScript framework. Prior to @builder.io/qwik 1.20.0 and @qwik.dev/core 2.0.0-beta.37, default server-side qwik-json deserialization causes ResourceSerializer.$fill$ to pass resource._resolved to Promise.resolve without first rejecting attacker-controlled thenables. An unauthenticated request can provide a plain object whose then property is a QRL for an unregistered symbol, causing an orphaned asynchronous rejection that terminates Node.js under its default unhandled-rejection policy. A single request can crash a server, and repeated requests can keep replicas unavailable. This issue is fixed in @builder.io/qwik 1.20.0 and @qwik.dev/core 2.0.0-beta.37.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 16:35 UTC
CWE
- CWE-248 - Uncaught Exception
Assigner
GitHub_M
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/QwikDev/qwik/security/advisori… | x_refsource_CONFIRM |
| https://github.com/QwikDev/qwik/pull/8655 | x_refsource_MISC |
| https://github.com/QwikDev/qwik/commit/c1e7444402… | x_refsource_MISC |
| https://github.com/QwikDev/qwik/releases/tag/@bui… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| QwikDev | qwik |
Affected:
< 2.0.0-beta37
|
|
| @builder.io | qwik |
Affected:
< 1.20.0
|
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CVE-2026-84947 (GCVE-0-2026-84947)
Vulnerability from cvelistv5 – Published: 2026-09-04 16:53 – Updated: 2026-09-04 18:35
VLAI
EPSS
VEX
Title
undici vulnerable to response truncation via oversized chunked responses in the dump interceptor
Summary
undici's dump interceptor reads and discards a response body up to a configurable maximum size. When a response declares a Content-Length that exceeds the maximum, the interceptor aborts cleanly, but when a response has no Content-Length and is chunked, the interceptor instead signals completion early once the accumulated size reaches the maximum, without pausing or aborting the request. Because the underlying parser keeps delivering body bytes, a second completion signal fires and trips an internal assertion, which aborts the request and tears down the connection. The application is left observing a misleading successful status with an empty or truncated body while the connection has actually been disconnected. This affects undici versions from 7.1.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 18:34 UTC
Assigner
openjs
CNA
References
Impacted products
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CVE-2026-84445 (GCVE-0-2026-84445)
Vulnerability from cvelistv5 – Published: 2026-09-14 16:11 – Updated: 2026-09-14 16:36
VLAI
EPSS
VEX
Title
gRPC-Go: Denial of Service (DoS) via crash due to missing `:authority` and `Host` headers in the xDS servers
Summary
gRPC-Go is the Go language implementation of gRPC. Prior to 1.82.2 and 1.83.2, servers created with xds.NewGRPCServer() allow internal/transport/http2_server.go to accept an RPC containing neither the :authority header nor the Host header, while RouteAndProcess in internal/xds/server/routing.go assumes that an authority value exists and indexes the empty slice. A remote client that can complete transport connection establishment can trigger an index-out-of-bounds panic that is not recovered by the per-RPC goroutine and terminates the entire server process. In insecure or ordinary TLS deployments the request can be unauthenticated, while strict mTLS or ALTS deployments require valid transport credentials before the malformed RPC can reach the interceptor. This issue is fixed in versions 1.82.2 and 1.83.2.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 16:36 UTC
Assigner
GitHub_M
CNA
References
10 references
| URL | Tags |
|---|---|
| https://github.com/grpc/grpc-go/security/advisori… | x_refsource_CONFIRM |
| https://github.com/grpc/grpc-go/issues/9354 | x_refsource_MISC |
| https://github.com/grpc/grpc-go/pull/9365 | x_refsource_MISC |
| https://github.com/grpc/grpc-go/pull/9366 | x_refsource_MISC |
| https://github.com/grpc/grpc-go/pull/9367 | x_refsource_MISC |
| https://github.com/grpc/grpc-go/commit/3822494d8e… | x_refsource_MISC |
| https://github.com/grpc/grpc-go/commit/8668b69c16… | x_refsource_MISC |
| https://github.com/grpc/grpc-go/commit/93e31b4854… | x_refsource_MISC |
| https://github.com/grpc/grpc-go/releases/tag/v1.82.2 | x_refsource_MISC |
| https://github.com/grpc/grpc-go/releases/tag/v1.83.2 | x_refsource_MISC |
Impacted products
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CVE-2026-82417 (GCVE-0-2026-82417)
Vulnerability from cvelistv5 – Published: 2026-08-29 23:51 – Updated: 2026-08-31 17:08
VLAI
EPSS
VEX
Title
qs.stringify throws TypeError on objects with a non-callable constructor.isBuffer property
Summary
### Summary
`qs.stringify` throws a `TypeError` when it serializes an object whose own `constructor` property has a truthy, non-callable `isBuffer` member. `utils.isBuffer` duck-types buffers by calling `obj.constructor.isBuffer(obj)` after checking only that the property is truthy, so a value such as `{ constructor: { isBuffer: "x" } }` makes the call throw `TypeError: obj.constructor.isBuffer is not a function`.
### Details
`lib/stringify.js:127` calls `utils.isBuffer` on every non-primitive value it serializes. `utils.isBuffer` (`lib/utils.js:332`) reads `obj.constructor.isBuffer` and invokes it without verifying that it is a function. `constructor` and `isBuffer` are ordinary property names, so any object carrying them as own properties reaches the unchecked call.
Such an object can be built from untrusted input. `qs.parse("x[constructor][isBuffer]=y", { plainObjects: true })` or `{ allowPrototypes: true }` keeps the `constructor` key as an own property (the default parse options drop it), and `JSON.parse("{\"a\":{\"constructor\":{\"isBuffer\":\"x\"}}}")` produces the same shape with no qs option involved. Express 4 with its default `query parser` setting and body-parser with `extended: true` both call `qs.parse` with `allowPrototypes: true`, so on those stacks `req.query` and `req.body` can carry the shape directly.
#### PoC
```js
var qs = require("qs");
qs.stringify(qs.parse("x[constructor][isBuffer]=y", { plainObjects: true }));
qs.stringify(JSON.parse("{\"a\":{\"constructor\":{\"isBuffer\":\"x\"}}}"));
// TypeError: obj.constructor.isBuffer is not a function
// at Object.isBuffer (lib/utils.js:332:78)
// at stringify (lib/stringify.js:127:45)
```
#### Fix
`lib/utils.js`, applied in e83d321 on `main` and released as v6.16.0:
```diff
- return !!(obj.constructor && obj.constructor.isBuffer && obj.constructor.isBuffer(obj));
+ return !!(obj.constructor && typeof obj.constructor.isBuffer === "function" && obj.constructor.isBuffer(obj));
```
Real `Buffer`, `safer-buffer`, and browserify `buffer` polyfill instances serialize exactly as before; only the throw is removed.
### Affected versions
`>=2.2.5 <6.16.0`, fixed in v6.16.0.
The unguarded duck-type was introduced in 3768a75 and first shipped in v2.2.5 (September 2014). v2.2.4 and earlier used `Buffer.isBuffer` and are not affected. Every release from v2.2.5 through v6.15.3 contains the unguarded call.
### Impact
An unauthenticated request can make any code path that re-serializes attacker-influenced data with `qs.stringify` (for example, rebuilding a query string from `req.query` for a redirect or an upstream request, or serializing a parsed JSON body) throw synchronously. In a typical Node.js HTTP framework the throw is caught by the framework error boundary and the affected request returns a 500; the process survives and other requests are unaffected. Where the call runs outside an error boundary, such as an `async` Express 4 handler (where the throw becomes an unhandled promise rejection) or a background job, the process exits, so the impact in that case depends on the application error handling rather than on qs.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 17:07 UTC
Assigner
harborist
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ljharb/qs/security/advisories/… | vendor-advisory |
| https://github.com/ljharb/qs/commit/e83d321ffafb3… | patch |
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"value": "### Summary\n\n\n\n`qs.stringify` throws a `TypeError` when it serializes an object whose own `constructor` property has a truthy, non-callable `isBuffer` member. `utils.isBuffer` duck-types buffers by calling `obj.constructor.isBuffer(obj)` after checking only that the property is truthy, so a value such as `{ constructor: { isBuffer: \"x\" } }` makes the call throw `TypeError: obj.constructor.isBuffer is not a function`.\n\n\n\n### Details\n\n\n\n`lib/stringify.js:127` calls `utils.isBuffer` on every non-primitive value it serializes. `utils.isBuffer` (`lib/utils.js:332`) reads `obj.constructor.isBuffer` and invokes it without verifying that it is a function. `constructor` and `isBuffer` are ordinary property names, so any object carrying them as own properties reaches the unchecked call.\n\n\n\nSuch an object can be built from untrusted input. `qs.parse(\"x[constructor][isBuffer]=y\", { plainObjects: true })` or `{ allowPrototypes: true }` keeps the `constructor` key as an own property (the default parse options drop it), and `JSON.parse(\"{\\\"a\\\":{\\\"constructor\\\":{\\\"isBuffer\\\":\\\"x\\\"}}}\")` produces the same shape with no qs option involved. Express 4 with its default `query parser` setting and body-parser with `extended: true` both call `qs.parse` with `allowPrototypes: true`, so on those stacks `req.query` and `req.body` can carry the shape directly.\n\n\n\n#### PoC\n\n\n\n```js\n\n\n\nvar qs = require(\"qs\");\n\n\n\nqs.stringify(qs.parse(\"x[constructor][isBuffer]=y\", { plainObjects: true }));\n\n\n\nqs.stringify(JSON.parse(\"{\\\"a\\\":{\\\"constructor\\\":{\\\"isBuffer\\\":\\\"x\\\"}}}\"));\n\n\n\n// TypeError: obj.constructor.isBuffer is not a function\n\n\n\n// at Object.isBuffer (lib/utils.js:332:78)\n\n\n\n// at stringify (lib/stringify.js:127:45)\n\n\n\n```\n\n\n\n#### Fix\n\n\n\n`lib/utils.js`, applied in e83d321 on `main` and released as v6.16.0:\n\n\n\n```diff\n\n\n\n- return !!(obj.constructor \u0026\u0026 obj.constructor.isBuffer \u0026\u0026 obj.constructor.isBuffer(obj));\n\n\n\n+ return !!(obj.constructor \u0026\u0026 typeof obj.constructor.isBuffer === \"function\" \u0026\u0026 obj.constructor.isBuffer(obj));\n\n\n\n```\n\n\n\nReal `Buffer`, `safer-buffer`, and browserify `buffer` polyfill instances serialize exactly as before; only the throw is removed.\n\n\n\n### Affected versions\n\n\n\n`\u003e=2.2.5 \u003c6.16.0`, fixed in v6.16.0.\n\n\n\nThe unguarded duck-type was introduced in 3768a75 and first shipped in v2.2.5 (September 2014). v2.2.4 and earlier used `Buffer.isBuffer` and are not affected. Every release from v2.2.5 through v6.15.3 contains the unguarded call.\n\n\n\n### Impact\n\n\n\nAn unauthenticated request can make any code path that re-serializes attacker-influenced data with `qs.stringify` (for example, rebuilding a query string from `req.query` for a redirect or an upstream request, or serializing a parsed JSON body) throw synchronously. In a typical Node.js HTTP framework the throw is caught by the framework error boundary and the affected request returns a 500; the process survives and other requests are unaffected. Where the call runs outside an error boundary, such as an `async` Express 4 handler (where the throw becomes an unhandled promise rejection) or a background job, the process exits, so the impact in that case depends on the application error handling rather than on qs."
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CVE-2026-82410 (GCVE-0-2026-82410)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:59 – Updated: 2026-09-16 15:15
VLAI
EPSS
VEX
Title
Pocketbase: Unhandled panic in worker goroutines
Summary
Pocketbase is an open source web backend written in go. Prior to 0.22.48 and 0.39.7, PocketBase's panic-recovery middleware covers regular request handling but not internal child and worker goroutines. A panic in one of these internal goroutines can escape recovery and terminate the server process, causing a denial of service. The remediation introduces routine.SafeWrap to convert recovered panics into regular errors and applies it to the affected internal worker functions. This issue is fixed in versions 0.22.48 and 0.39.7.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 15:15 UTC
CWE
- CWE-248 - Uncaught Exception
Assigner
GitHub_M
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/pocketbase/pocketbase/security… | x_refsource_CONFIRM |
| https://github.com/pocketbase/pocketbase/commit/3… | x_refsource_MISC |
| https://github.com/pocketbase/pocketbase/commit/f… | x_refsource_MISC |
| https://github.com/pocketbase/pocketbase/discussi… | x_refsource_MISC |
| https://github.com/pocketbase/pocketbase/releases… | x_refsource_MISC |
| https://github.com/pocketbase/pocketbase/releases… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| pocketbase | pocketbase |
Affected:
< 0.22.48
Affected: >= 0.23.0, < 0.39.7 |
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CVE-2026-82254 (GCVE-0-2026-82254)
Vulnerability from cvelistv5 – Published: 2026-08-28 10:49 – Updated: 2026-08-28 13:59
VLAI
EPSS
VEX
Title
gitoxide before 0.69.0 Denial of Service via gix-pack
Summary
gitoxide before 0.69.0 contains unchecked array indexing in delta application and uncapped allocation from attacker-controlled size headers in gix-pack. Attackers can send crafted pack data during clone or fetch operations to trigger panics or out-of-memory process kills.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 13:58 UTC
CWE
- CWE-248 - Uncaught Exception
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/GitoxideLabs/gitoxide/security… | vendor-advisory |
| https://www.vulncheck.com/advisories/gitoxide-bef… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GitoxideLabs | gitoxide |
Affected:
0 , < 0.69.0
(semver)
Unaffected: 0.69.0 (semver) cpe:2.3:a:gitoxidelabs:gitoxide:*:*:*:*:*:*:*:* |
Date Public
2026-04-25 00:00
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CVE-2026-82231 (GCVE-0-2026-82231)
Vulnerability from cvelistv5 – Published: 2026-10-21 12:04 – Updated: 2026-10-30 14:30
VLAI
EPSS
VEX
Title
Apache bRPC: Malformed Thrift T_EXCEPTION reply causes process termination in Thrift client
Summary
A Thrift client in Apache bRPC (version < 1.18.0, built with WITH_THRIFT which is off by default) can be crashed by the server peer it talks to. When the server returns a T_EXCEPTION reply whose exception struct is malformed, the client decodes it without catching what Apache Thrift throws (TProtocolException, TTransportException or std::length_error). The exception unwinds out of the bthread task function and the process calls std::terminate(), terminating the whole process along with every other in-flight RPC.
This is the client response path, so the adversary is the server peer, which THREAT_MODEL.md treats as untrusted. It requires a WITH_THRIFT build (off by default).
How to Fix:
1. Upgrade bRPC to version 1.18.0, which fixes this issue.
2. Apply this patch: https://github.com/apache/brpc/pull/3500
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 14:29 UTC
CWE
- CWE-248 - Uncaught Exception
Assigner
apache
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/2pf15ojj0vr7rtx95… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache bRPC |
Affected:
0 , < 1.18.0
(semver)
|
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CVE-2026-82058 (GCVE-0-2026-82058)
Vulnerability from cvelistv5 – Published: 2026-09-08 16:12 – Updated: 2026-09-08 18:00
VLAI
EPSS
VEX
Title
Unhandled Exception in MongoDB Server JSON Schema Validation Error Generation Leads to Denial of Service
Summary
A flaw in MongoDB's JSON Schema validation error generation code allows an authenticated user with readWrite privileges to crash the mongod server. When a BSON document containing an array with a malformed numeric field name fails a $jsonSchema items type constraint, the error generation path performs unsafe numeric conversion on the user-controlled field name without proper exception handling, resulting in an uncaught exception that terminates the server process. This is possible because incoming wire protocol BSON validation does not enforce that array element field names are valid, in-range numeric indices.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 17:59 UTC
CWE
- CWE-248 - Uncaught Exception
Assigner
mongodb
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | MongoDB Server |
Affected:
8.3.0 , < 8.3.9
(semver)
Affected: 8.0.0 , < 8.0.30 (semver) Affected: 7.0.0 , < 7.0.41 (semver) |
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.