CVE-2026-46385 (GCVE-0-2026-46385)
Vulnerability from cvelistv5 – Published: 2026-05-29 19:58 – Updated: 2026-09-09 12:05
VLAI
EPSS
VEX
Title
iskorotkov/avro: CPU Exhaustion in Avro Decoder
Summary
iskorotkov/avro is a fast Go Avro codec. Prior to 2.33.0, the Avro array and map decoders looped over an attacker-controlled block-count value without checking the underlying reader's error state inside the loop body. Reader.ReadBlockHeader returns the count as a Go int, which is 64-bit on amd64 / arm64 targets — so a producer can declare a block of up to math.MaxInt64 (~9.2 × 10¹⁸) elements followed by EOF (or any truncated payload), and the decoder will attempt that many no-op iterations before propagating the error. The realistic ceiling is "indefinite until the worker is killed externally" — a single hostile payload pins a CPU core until the process is OOM-killed, deadline-cancelled, or terminated. Remote, unauthenticated denial-of-service. This vulnerability is fixed in 2.33.0.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 16:22 UTC
CWE
Assigner
GitHub_M
CNA
References
14 references
Impacted products
14 products
| Vendor | Product | Version | |
|---|---|---|---|
| iskorotkov | avro |
Affected:
< 2.33.0
|
|
| Red Hat | Cryostat 4 on RHEL 9 |
Unaffected:
4.2.0-19 , < *
(rpm)
cpe:/a:redhat:cryostat:4::el9 |
|
| Red Hat | Multicluster Global Hub 1.4.5 |
Unaffected:
1784060681 , < *
(rpm)
cpe:/a:redhat:multicluster_globalhub:1.4::el9 |
|
| Red Hat | Multicluster Global Hub 1.6.5 |
Unaffected:
1784561376 , < *
(rpm)
cpe:/a:redhat:multicluster_globalhub:1.6::el9 |
|
| Red Hat | Multicluster Global Hub 1.7.0 |
Unaffected:
1784906628 , < *
(rpm)
Unaffected: 1785442872 , < * (rpm) cpe:/a:redhat:multicluster_globalhub:1.7::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.11 |
Unaffected:
1783578847 , < *
(rpm)
cpe:/a:redhat:acm:2.11::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.13 |
Unaffected:
1782383730 , < *
(rpm)
cpe:/a:redhat:acm:2.13::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 |
Unaffected:
1786908968 , < *
(rpm)
cpe:/a:redhat:acm:2.16::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.17 |
Unaffected:
1787316467 , < *
(rpm)
cpe:/a:redhat:acm:2.17::el9 |
|
| Red Hat | Red Hat multicluster global hub 1.5.3 |
Unaffected:
1784562060 , < *
(rpm)
cpe:/a:redhat:multicluster_globalhub:1.5::el9 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-46385",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-01T16:22:43.598595Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-01T16:36:20.424Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/iskorotkov/avro/security/advisories/GHSA-w8j3-pq8g-8m7w"
}
],
"title": "CISA ADP Vulnrichment"
},
{
"affected": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:cryostat:4::el9"
],
"defaultStatus": "affected",
"packageName": "cryostat/cryostat-storage-rhel9",
"product": "Cryostat 4 on RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "4.2.0-19",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_globalhub:1.4::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9",
"product": "Multicluster Global Hub 1.4.5",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1784060681",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_globalhub:1.6::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9",
"product": "Multicluster Global Hub 1.6.5",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1784561376",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_globalhub:1.7::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9",
"product": "Multicluster Global Hub 1.7.0",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1784906628",
"versionType": "rpm"
},
{
"lessThan": "*",
"status": "unaffected",
"version": "1785442872",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:acm:2.11::el9"
],
"defaultStatus": "affected",
"packageName": "rhacm2/acm-grafana-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.11",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1783578847",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:acm:2.13::el9"
],
"defaultStatus": "affected",
"packageName": "rhacm2/acm-grafana-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.13",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1782383730",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:acm:2.16::el9"
],
"defaultStatus": "affected",
"packageName": "rhacm2/acm-grafana-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.16",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1786908968",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:acm:2.17::el9"
],
"defaultStatus": "affected",
"packageName": "rhacm2/acm-grafana-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.17",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1787316467",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_globalhub:1.5::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9",
"product": "Red Hat multicluster global hub 1.5.3",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1784562060",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "unaffected",
"packageName": "grafana",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:8"
],
"defaultStatus": "unaffected",
"packageName": "grafana",
"product": "Red Hat Enterprise Linux 8",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:9"
],
"defaultStatus": "unaffected",
"packageName": "grafana",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:hummingbird:1"
],
"defaultStatus": "affected",
"packageName": "opentelemetry-collector-contrib",
"product": "Red Hat Hardened Images",
"vendor": "Red Hat"
}
],
"datePublic": "2026-05-29T19:58:59.667Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the Avro array and map decoding logic in Go Avro. The decoder failed to properly stop processing after encountering read errors while iterating over attacker-controlled block-count values, leading to excessive resource consumption. A remote unauthenticated attacker could exploit this issue using specially crafted Avro payloads causing denial of service, where the affected system\u0027s CPU is consumed indefinitely until the process is terminated."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-835",
"description": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-09T12:05:07.261Z",
"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"shortName": "redhat-SADP"
},
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-46385"
},
{
"name": "RHBZ#2483475",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483475"
},
{
"tags": [
"x_sadp-csaf-vex"
],
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46385.json"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:48151"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:41030"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:44622"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:47149"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:53530"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:41064"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:30651"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:57191"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:60386"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:42852"
}
],
"solutions": [
{
"lang": "en",
"value": "RHSA-2026:48151: Cryostat 4 on RHEL 9"
},
{
"lang": "en",
"value": "RHSA-2026:41030: Multicluster Global Hub 1.4.5"
},
{
"lang": "en",
"value": "RHSA-2026:44622: Multicluster Global Hub 1.6.5"
},
{
"lang": "en",
"value": "RHSA-2026:47149: Multicluster Global Hub 1.7.0"
},
{
"lang": "en",
"value": "RHSA-2026:53530: Multicluster Global Hub 1.7.0"
},
{
"lang": "en",
"value": "RHSA-2026:41064: Red Hat Advanced Cluster Management for Kubernetes 2.11"
},
{
"lang": "en",
"value": "RHSA-2026:30651: Red Hat Advanced Cluster Management for Kubernetes 2.13"
},
{
"lang": "en",
"value": "RHSA-2026:57191: Red Hat Advanced Cluster Management for Kubernetes 2.16"
},
{
"lang": "en",
"value": "RHSA-2026:60386: Red Hat Advanced Cluster Management for Kubernetes 2.17"
},
{
"lang": "en",
"value": "RHSA-2026:42852: Red Hat multicluster global hub 1.5.3"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-05-29T21:01:37.087Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-05-29T19:58:59.667Z",
"value": "Made public."
}
],
"title": "github.com/hamba/avro/v2: github.com/linkedin/goavro/v2: CPU Exhaustion in Avro Decoder via Unbounded Block-Count Iteration",
"workarounds": [
{
"lang": "en",
"value": "Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security\u0027s standards for usability, deployment, applicability, or stability. Customers are advised to apply the relevant security updates when they become available."
}
],
"x_adpType": "supplier",
"x_generator": {
"engine": "sadp-cli 1.0.0"
}
}
],
"cna": {
"affected": [
{
"product": "avro",
"vendor": "iskorotkov",
"versions": [
{
"status": "affected",
"version": "\u003c 2.33.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "iskorotkov/avro is a fast Go Avro codec. Prior to 2.33.0, the Avro array and map decoders looped over an attacker-controlled block-count value without checking the underlying reader\u0027s error state inside the loop body. Reader.ReadBlockHeader returns the count as a Go int, which is 64-bit on amd64 / arm64 targets \u2014 so a producer can declare a block of up to math.MaxInt64 (~9.2 \u00d7 10\u00b9\u2078) elements followed by EOF (or any truncated payload), and the decoder will attempt that many no-op iterations before propagating the error. The realistic ceiling is \"indefinite until the worker is killed externally\" \u2014 a single hostile payload pins a CPU core until the process is OOM-killed, deadline-cancelled, or terminated. Remote, unauthenticated denial-of-service. This vulnerability is fixed in 2.33.0."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400: Uncontrolled Resource Consumption",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-29T19:58:59.667Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/iskorotkov/avro/security/advisories/GHSA-w8j3-pq8g-8m7w",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/iskorotkov/avro/security/advisories/GHSA-w8j3-pq8g-8m7w"
}
],
"source": {
"advisory": "GHSA-w8j3-pq8g-8m7w",
"discovery": "UNKNOWN"
},
"title": "iskorotkov/avro: CPU Exhaustion in Avro Decoder"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-46385",
"datePublished": "2026-05-29T19:58:59.667Z",
"dateReserved": "2026-05-13T19:53:47.922Z",
"dateUpdated": "2026-09-09T12:05:07.261Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": {
"adp": [
{
"affected": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:cryostat:4::el9"
],
"defaultStatus": "affected",
"packageName": "cryostat/cryostat-storage-rhel9",
"product": "Cryostat 4 on RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "4.2.0-19",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_globalhub:1.4::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9",
"product": "Multicluster Global Hub 1.4.5",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1784060681",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_globalhub:1.6::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9",
"product": "Multicluster Global Hub 1.6.5",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1784561376",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_globalhub:1.7::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9",
"product": "Multicluster Global Hub 1.7.0",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1784906628",
"versionType": "rpm"
},
{
"lessThan": "*",
"status": "unaffected",
"version": "1785442872",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:acm:2.11::el9"
],
"defaultStatus": "affected",
"packageName": "rhacm2/acm-grafana-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.11",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1783578847",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:acm:2.13::el9"
],
"defaultStatus": "affected",
"packageName": "rhacm2/acm-grafana-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.13",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1782383730",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:acm:2.16::el9"
],
"defaultStatus": "affected",
"packageName": "rhacm2/acm-grafana-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.16",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1786908968",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:acm:2.17::el9"
],
"defaultStatus": "affected",
"packageName": "rhacm2/acm-grafana-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.17",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1787316467",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_globalhub:1.5::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9",
"product": "Red Hat multicluster global hub 1.5.1",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1784562060",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "unaffected",
"packageName": "grafana",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:8"
],
"defaultStatus": "unaffected",
"packageName": "grafana",
"product": "Red Hat Enterprise Linux 8",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:9"
],
"defaultStatus": "unaffected",
"packageName": "grafana",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:hummingbird:1"
],
"defaultStatus": "affected",
"packageName": "opentelemetry-collector-contrib",
"product": "Red Hat Hardened Images",
"vendor": "Red Hat"
}
],
"datePublic": "2026-05-29T19:58:59.667Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the Avro array and map decoding logic in Go Avro. The decoder failed to properly stop processing after encountering read errors while iterating over attacker-controlled block-count values, leading to excessive resource consumption. A remote unauthenticated attacker could exploit this issue using specially crafted Avro payloads causing denial of service, where the affected system\u0027s CPU is consumed indefinitely until the process is terminated."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-835",
"description": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-07T12:05:12.929Z",
"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"shortName": "redhat-SADP"
},
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-46385"
},
{
"name": "RHBZ#2483475",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483475"
},
{
"tags": [
"x_sadp-csaf-vex"
],
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46385.json"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:48151"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:41030"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:44622"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:47149"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:53530"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:41064"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:30651"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:57191"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:60386"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:42852"
}
],
"solutions": [
{
"lang": "en",
"value": "RHSA-2026:48151: Cryostat 4 on RHEL 9"
},
{
"lang": "en",
"value": "RHSA-2026:41030: Multicluster Global Hub 1.4.5"
},
{
"lang": "en",
"value": "RHSA-2026:44622: Multicluster Global Hub 1.6.5"
},
{
"lang": "en",
"value": "RHSA-2026:47149: Multicluster Global Hub 1.7.0"
},
{
"lang": "en",
"value": "RHSA-2026:53530: Multicluster Global Hub 1.7.0"
},
{
"lang": "en",
"value": "RHSA-2026:41064: Red Hat Advanced Cluster Management for Kubernetes 2.11"
},
{
"lang": "en",
"value": "RHSA-2026:30651: Red Hat Advanced Cluster Management for Kubernetes 2.13"
},
{
"lang": "en",
"value": "RHSA-2026:57191: Red Hat Advanced Cluster Management for Kubernetes 2.16"
},
{
"lang": "en",
"value": "RHSA-2026:60386: Red Hat Advanced Cluster Management for Kubernetes 2.17"
},
{
"lang": "en",
"value": "RHSA-2026:42852: Red Hat multicluster global hub 1.5.1"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-05-29T21:01:37.087Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-05-29T19:58:59.667Z",
"value": "Made public."
}
],
"title": "github.com/hamba/avro/v2: github.com/linkedin/goavro/v2: CPU Exhaustion in Avro Decoder via Unbounded Block-Count Iteration",
"workarounds": [
{
"lang": "en",
"value": "Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security\u0027s standards for usability, deployment, applicability, or stability. Customers are advised to apply the relevant security updates when they become available."
}
],
"x_adpType": "supplier",
"x_generator": {
"engine": "sadp-cli 1.0.0"
}
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-46385",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-01T16:22:43.598595Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-01T16:14:40.611Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/iskorotkov/avro/security/advisories/GHSA-w8j3-pq8g-8m7w"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "avro",
"vendor": "iskorotkov",
"versions": [
{
"status": "affected",
"version": "\u003c 2.33.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "iskorotkov/avro is a fast Go Avro codec. Prior to 2.33.0, the Avro array and map decoders looped over an attacker-controlled block-count value without checking the underlying reader\u0027s error state inside the loop body. Reader.ReadBlockHeader returns the count as a Go int, which is 64-bit on amd64 / arm64 targets \u2014 so a producer can declare a block of up to math.MaxInt64 (~9.2 \u00d7 10\u00b9\u2078) elements followed by EOF (or any truncated payload), and the decoder will attempt that many no-op iterations before propagating the error. The realistic ceiling is \"indefinite until the worker is killed externally\" \u2014 a single hostile payload pins a CPU core until the process is OOM-killed, deadline-cancelled, or terminated. Remote, unauthenticated denial-of-service. This vulnerability is fixed in 2.33.0."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400: Uncontrolled Resource Consumption",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-29T19:58:59.667Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/iskorotkov/avro/security/advisories/GHSA-w8j3-pq8g-8m7w",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/iskorotkov/avro/security/advisories/GHSA-w8j3-pq8g-8m7w"
}
],
"source": {
"advisory": "GHSA-w8j3-pq8g-8m7w",
"discovery": "UNKNOWN"
},
"title": "iskorotkov/avro: CPU Exhaustion in Avro Decoder"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-46385",
"datePublished": "2026-05-29T19:58:59.667Z",
"dateReserved": "2026-05-13T19:53:47.922Z",
"dateUpdated": "2026-09-07T12:05:12.929Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.