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2 vulnerabilities found for golang.org/x/crypto/ssh/knownhosts by golang.org/x/crypto
CVE-2026-42508 (GCVE-0-2026-42508)
Vulnerability from nvd – Published: 2026-05-22 02:31 – Updated: 2026-08-24 12:07
VLAI
EPSS
VEX
Title
Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts
Summary
Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.
Severity
9.1 (Critical)
7.4 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-22 18:43 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
42 references
Impacted products
85 products
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/crypto | golang.org/x/crypto/ssh/knownhosts |
Affected:
0 , < 0.52.0
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
7:5.8.2-4.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
8100020260701102925.afee755d , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
8060020260803064027.ad008a3a , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On |
Unaffected:
8060020260803064027.ad008a3a , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
8080020260721142025.63b34585 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
8080020260721142025.63b34585 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
6:5.8.2-4.el9_8 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | RHEM 1.0 for RHEL 9 |
Unaffected:
0:1.0.3-1.el9em , < *
(rpm)
cpe:/a:redhat:edge_manager:1.0::el9 |
|
| Red Hat | RHEM 1.1 for RHEL 10 |
Unaffected:
0:1.1.3-1.el10em , < *
(rpm)
cpe:/a:redhat:edge_manager:1.1::el10 |
|
| Red Hat | RHEM 1.1 for RHEL 9 |
Unaffected:
0:1.1.3-1.el9em , < *
(rpm)
cpe:/a:redhat:edge_manager:1.1::el9 |
|
| Red Hat | DevWorkspace Operator 0.42 |
Unaffected:
1782401674 , < *
(rpm)
cpe:/a:redhat:devworkspace:0.42::el9 |
|
| Red Hat | multicluster engine for Kubernetes 2.1 |
Unaffected:
1784646026 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.10::el9 |
|
| Red Hat | multicluster engine for Kubernetes 2.11 |
Unaffected:
1786911957 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.11::el9 |
|
| Red Hat | multicluster engine for Kubernetes 2.11 |
Unaffected:
1786912006 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.11::el9 |
|
| Red Hat | multicluster engine for Kubernetes 2.8 |
Unaffected:
1784646786 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.8::el9 |
|
| Red Hat | OpenShift API for Data Protection 1.3 |
Unaffected:
1785177359 , < *
(rpm)
cpe:/a:redhat:openshift_api_data_protection:1.3::el9 |
|
| Red Hat | OpenShift API for Data Protection 1.6 |
Unaffected:
1784058822 , < *
(rpm)
cpe:/a:redhat:openshift_api_data_protection:1.6::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.11 |
Unaffected:
1783813250 , < *
(rpm)
cpe:/a:redhat:acm:2.11::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.13 |
Unaffected:
1784740143 , < *
(rpm)
cpe:/a:redhat:acm:2.13::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 |
Unaffected:
1786456658 , < *
(rpm)
cpe:/a:redhat:acm:2.16::el9 |
|
| Red Hat | Red Hat Advanced Cluster Security 4.9 |
Unaffected:
1781686446 , < *
(rpm)
cpe:/a:redhat:advanced_cluster_security:4.9::el8 |
|
| Red Hat | Red Hat Advanced Cluster Security for Kubernetes 4.10 |
Unaffected:
1781686458 , < *
(rpm)
cpe:/a:redhat:advanced_cluster_security:4.10::el8 |
|
| Red Hat | Red Hat Edge Manager 1.0 |
Unaffected:
1783502025 , < *
(rpm)
cpe:/a:redhat:edge_manager:1.0::el9 |
|
| Red Hat | Red Hat Edge Manager 1.1 |
Unaffected:
1784196588 , < *
(rpm)
cpe:/a:redhat:edge_manager:1.1::el10 |
|
| Red Hat | Red Hat Edge Manager 1.1 |
Unaffected:
1784126780 , < *
(rpm)
cpe:/a:redhat:edge_manager:1.1::el9 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
1.25.11-2.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
1.26.4-2.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Builds 1.7.3 |
Unaffected:
1783057868 , < *
(rpm)
cpe:/a:redhat:openshift_builds:1.7::el9 |
|
| Red Hat | Red Hat OpenShift Builds 1.8.1 |
Unaffected:
1784121108 , < *
(rpm)
cpe:/a:redhat:openshift_builds:1.8::el9 |
|
| Red Hat | Red Hat OpenShift Builds 1.8.1 |
Unaffected:
1783612119 , < *
(rpm)
cpe:/a:redhat:openshift_builds:1.8::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932114 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782931768 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932104 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783536000 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783535989 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783536515 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932521 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783018461 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783018421 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932812 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783537001 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932919 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783537586 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932969 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933015 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933042 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783537392 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933235 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933251 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783537955 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933417 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783537742 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933602 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783019377 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782934054 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782934036 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782934284 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat OpenShift GitOps 1.19 |
Unaffected:
1785149260 , < *
(rpm)
cpe:/a:redhat:openshift_gitops:1.19::el8 |
|
| Red Hat | Red Hat OpenShift GitOps 1.2 |
Unaffected:
1785211346 , < *
(rpm)
cpe:/a:redhat:openshift_gitops:1.20::el9 |
|
| Red Hat | Red Hat Quay 3.1 |
Unaffected:
1783750447 , < *
(rpm)
cpe:/a:redhat:quay:3.10::el8 |
|
| Red Hat | Red Hat Quay 3.12 |
Unaffected:
1783751865 , < *
(rpm)
Unaffected: 1784353904 , < * (rpm) cpe:/a:redhat:quay:3.12::el8 |
|
| Red Hat | Red Hat Quay 3.15 |
Unaffected:
1784351966 , < *
(rpm)
cpe:/a:redhat:quay:3.15::el8 |
|
| Red Hat | Red Hat Quay 3.16 |
Unaffected:
1783955846 , < *
(rpm)
cpe:/a:redhat:quay:3.16::el9 |
|
| Red Hat | Red Hat Quay 3.9 |
Unaffected:
1784125838 , < *
(rpm)
cpe:/a:redhat:quay:3.9::el8 |
|
| Red Hat | Red Hat Trusted Artifact Signer 1.4 |
Unaffected:
4-1.4.2 , < *
(rpm)
Unaffected: 4-1.4.3 , < * (rpm) cpe:/a:redhat:trusted_artifact_signer:1.4::el9 |
|
| Red Hat | Assisted Installer for Red Hat OpenShift Container Platform 2 |
cpe:/a:redhat:assisted_installer:2
|
|
| Red Hat | cert-manager Operator for Red Hat OpenShift |
cpe:/a:redhat:cert_manager:1
|
|
| Red Hat | ExternalDNS Operator |
cpe:/a:redhat:ext_dns_optr:1
|
|
| Red Hat | External Secrets Operator for Red Hat OpenShift |
cpe:/a:redhat:external_secrets_operator:1
|
|
| Red Hat | Logging Subsystem for Red Hat OpenShift |
cpe:/a:redhat:logging:6
|
|
| Red Hat | OpenShift Pipelines |
cpe:/a:redhat:openshift_pipelines:1
|
|
| Red Hat | OpenShift Serverless |
cpe:/a:redhat:serverless:1
|
|
| Red Hat | Red Hat Ceph Storage 9 |
cpe:/a:redhat:ceph_storage:9
|
|
| 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 Enterprise Linux AI (RHEL AI) 3 |
cpe:/a:redhat:enterprise_linux_ai:3
|
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat OpenShift Virtualization 4 |
cpe:/a:redhat:container_native_virtualization:4
|
|
| Red Hat | Red Hat OpenStack Platform 16.2 |
cpe:/a:redhat:openstack:16.2
|
|
| Red Hat | Red Hat OpenStack Platform 17.1 |
cpe:/a:redhat:openstack:17.1
|
|
| Red Hat | Red Hat OpenStack Platform 18.0 |
cpe:/a:redhat:openstack:18.0
|
|
| Red Hat | Red Hat Quay 3 |
cpe:/a:redhat:quay:3
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-42508",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-22T18:43:40.584666Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-22T18:44:33.483Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"affected": [
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10.2"
],
"defaultStatus": "affected",
"packageName": "podman",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "7:5.8.2-4.el10_2",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:enterprise_linux:8"
],
"defaultStatus": "affected",
"packageName": "container-tools:rhel8",
"product": "Red Hat Enterprise Linux 8",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "8100020260701102925.afee755d",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:rhel_aus:8.6"
],
"defaultStatus": "affected",
"packageName": "container-tools:rhel8",
"product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "8060020260803064027.ad008a3a",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:rhel_eus_long_life:8.6"
],
"defaultStatus": "affected",
"packageName": "container-tools:rhel8",
"product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "8060020260803064027.ad008a3a",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:rhel_tus:8.8"
],
"defaultStatus": "affected",
"packageName": "container-tools:rhel8",
"product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "8080020260721142025.63b34585",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:rhel_e4s:8.8"
],
"defaultStatus": "affected",
"packageName": "container-tools:rhel8",
"product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "8080020260721142025.63b34585",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:enterprise_linux:9"
],
"defaultStatus": "affected",
"packageName": "podman",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "6:5.8.2-4.el9_8",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:edge_manager:1.0::el9"
],
"defaultStatus": "affected",
"packageName": "flightctl",
"product": "RHEM 1.0 for RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:1.0.3-1.el9em",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:edge_manager:1.1::el10"
],
"defaultStatus": "affected",
"packageName": "flightctl",
"product": "RHEM 1.1 for RHEL 10",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:1.1.3-1.el10em",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:edge_manager:1.1::el9"
],
"defaultStatus": "affected",
"packageName": "flightctl",
"product": "RHEM 1.1 for RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:1.1.3-1.el9em",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:devworkspace:0.42::el9"
],
"defaultStatus": "affected",
"packageName": "devworkspace/devworkspace-rhel9-operator",
"product": "DevWorkspace Operator 0.42",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1782401674",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.10::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-engine/cluster-image-set-controller-rhel9",
"product": "multicluster engine for Kubernetes 2.1",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1784646026",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.11::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-engine/cluster-image-set-controller-rhel9",
"product": "multicluster engine for Kubernetes 2.11",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1786911957",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.11::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-engine/hypershift-addon-rhel9-operator",
"product": "multicluster engine for Kubernetes 2.11",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1786912006",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
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"value": "RHSA-2026:47737: Red Hat Advanced Cluster Management for Kubernetes 2.13"
},
{
"lang": "en",
"value": "RHSA-2026:54400: Red Hat Advanced Cluster Management for Kubernetes 2.16"
},
{
"lang": "en",
"value": "RHSA-2026:26546: Red Hat Advanced Cluster Security 4.9"
},
{
"lang": "en",
"value": "RHSA-2026:26547: Red Hat Advanced Cluster Security for Kubernetes 4.10"
},
{
"lang": "en",
"value": "RHSA-2026:36651: Red Hat Edge Manager 1.0"
},
{
"lang": "en",
"value": "RHSA-2026:40945: Red Hat Edge Manager 1.1"
},
{
"lang": "en",
"value": "RHSA-2026:40118: Red Hat Edge Manager 1.1"
},
{
"lang": "en",
"value": "RHSA-2026:23262: Red Hat Hardened Images"
},
{
"lang": "en",
"value": "RHSA-2026:23264: Red Hat Hardened Images"
},
{
"lang": "en",
"value": "RHSA-2026:36648: Red Hat OpenShift Builds 1.7.3"
},
{
"lang": "en",
"value": "RHSA-2026:41036: Red Hat OpenShift Builds 1.8.1"
},
{
"lang": "en",
"value": "RHSA-2026:52857: Red Hat OpenShift GitOps 1.19"
},
{
"lang": "en",
"value": "RHSA-2026:52910: Red Hat OpenShift GitOps 1.2"
},
{
"lang": "en",
"value": "RHSA-2026:37387: Red Hat Openshift Data Foundation 4.22"
},
{
"lang": "en",
"value": "RHSA-2026:42146: Red Hat Quay 3.12"
},
{
"lang": "en",
"value": "RHSA-2026:43052: Red Hat Quay 3.12"
},
{
"lang": "en",
"value": "RHSA-2026:42796: Red Hat Quay 3.15"
},
{
"lang": "en",
"value": "RHSA-2026:41066: Red Hat Quay 3.16"
},
{
"lang": "en",
"value": "RHSA-2026:41031: Red Hat Quay 3.1"
},
{
"lang": "en",
"value": "RHSA-2026:40262: Red Hat Quay 3.9"
},
{
"lang": "en",
"value": "RHSA-2026:36797: Red Hat Trusted Artifact Signer 1.4"
},
{
"lang": "en",
"value": "RHSA-2026:57194: multicluster engine for Kubernetes 2.11"
},
{
"lang": "en",
"value": "RHSA-2026:46885: multicluster engine for Kubernetes 2.1"
},
{
"lang": "en",
"value": "RHSA-2026:47735: multicluster engine for Kubernetes 2.8"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-05-22T04:01:49.515Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-05-22T02:31:27.644Z",
"value": "Made public."
}
],
"title": "golang.org/x/crypto/ssh/knownhosts: golang: golang.org/x/crypto/ssh/knownhosts: Revocation bypass via unchecked SignatureKey",
"x_adpType": "supplier",
"x_generator": {
"engine": "sadp-cli 1.0.0"
}
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/crypto/ssh/knownhosts",
"product": "golang.org/x/crypto/ssh/knownhosts",
"programRoutines": [
{
"name": "hostKeyDB.IsRevoked"
}
],
"vendor": "golang.org/x/crypto",
"versions": [
{
"lessThan": "0.52.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Omar Khaleel Ibrahim - mr3okk"
}
],
"descriptions": [
{
"lang": "en",
"value": "Previously, a revoked \u0027SignatureKey\u0027 belonging to a CA was not correctly checked for revocation. Now, both the \u0027key\u0027 and \u0027key.SignatureKey\u0027 are checked for @revoked."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-295: Improper Certificate Validation",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-14T16:38:13.877Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/issue/79568"
},
{
"url": "https://go.dev/cl/781220"
},
{
"url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5021"
}
],
"title": "Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2026-42508",
"datePublished": "2026-05-22T02:31:27.644Z",
"dateReserved": "2026-04-28T00:21:12.792Z",
"dateUpdated": "2026-08-24T12:07:02.001Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-42508 (GCVE-0-2026-42508)
Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-08-24 12:07
VLAI
EPSS
VEX
Title
Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts
Summary
Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.
Severity
9.1 (Critical)
7.4 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-22 18:43 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
42 references
Impacted products
85 products
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/crypto | golang.org/x/crypto/ssh/knownhosts |
Affected:
0 , < 0.52.0
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
7:5.8.2-4.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
8100020260701102925.afee755d , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
8060020260803064027.ad008a3a , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On |
Unaffected:
8060020260803064027.ad008a3a , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
8080020260721142025.63b34585 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
8080020260721142025.63b34585 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
6:5.8.2-4.el9_8 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | RHEM 1.0 for RHEL 9 |
Unaffected:
0:1.0.3-1.el9em , < *
(rpm)
cpe:/a:redhat:edge_manager:1.0::el9 |
|
| Red Hat | RHEM 1.1 for RHEL 10 |
Unaffected:
0:1.1.3-1.el10em , < *
(rpm)
cpe:/a:redhat:edge_manager:1.1::el10 |
|
| Red Hat | RHEM 1.1 for RHEL 9 |
Unaffected:
0:1.1.3-1.el9em , < *
(rpm)
cpe:/a:redhat:edge_manager:1.1::el9 |
|
| Red Hat | DevWorkspace Operator 0.42 |
Unaffected:
1782401674 , < *
(rpm)
cpe:/a:redhat:devworkspace:0.42::el9 |
|
| Red Hat | multicluster engine for Kubernetes 2.1 |
Unaffected:
1784646026 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.10::el9 |
|
| Red Hat | multicluster engine for Kubernetes 2.11 |
Unaffected:
1786911957 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.11::el9 |
|
| Red Hat | multicluster engine for Kubernetes 2.11 |
Unaffected:
1786912006 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.11::el9 |
|
| Red Hat | multicluster engine for Kubernetes 2.8 |
Unaffected:
1784646786 , < *
(rpm)
cpe:/a:redhat:multicluster_engine:2.8::el9 |
|
| Red Hat | OpenShift API for Data Protection 1.3 |
Unaffected:
1785177359 , < *
(rpm)
cpe:/a:redhat:openshift_api_data_protection:1.3::el9 |
|
| Red Hat | OpenShift API for Data Protection 1.6 |
Unaffected:
1784058822 , < *
(rpm)
cpe:/a:redhat:openshift_api_data_protection:1.6::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.11 |
Unaffected:
1783813250 , < *
(rpm)
cpe:/a:redhat:acm:2.11::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.13 |
Unaffected:
1784740143 , < *
(rpm)
cpe:/a:redhat:acm:2.13::el9 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 |
Unaffected:
1786456658 , < *
(rpm)
cpe:/a:redhat:acm:2.16::el9 |
|
| Red Hat | Red Hat Advanced Cluster Security 4.9 |
Unaffected:
1781686446 , < *
(rpm)
cpe:/a:redhat:advanced_cluster_security:4.9::el8 |
|
| Red Hat | Red Hat Advanced Cluster Security for Kubernetes 4.10 |
Unaffected:
1781686458 , < *
(rpm)
cpe:/a:redhat:advanced_cluster_security:4.10::el8 |
|
| Red Hat | Red Hat Edge Manager 1.0 |
Unaffected:
1783502025 , < *
(rpm)
cpe:/a:redhat:edge_manager:1.0::el9 |
|
| Red Hat | Red Hat Edge Manager 1.1 |
Unaffected:
1784196588 , < *
(rpm)
cpe:/a:redhat:edge_manager:1.1::el10 |
|
| Red Hat | Red Hat Edge Manager 1.1 |
Unaffected:
1784126780 , < *
(rpm)
cpe:/a:redhat:edge_manager:1.1::el9 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
1.25.11-2.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
1.26.4-2.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Builds 1.7.3 |
Unaffected:
1783057868 , < *
(rpm)
cpe:/a:redhat:openshift_builds:1.7::el9 |
|
| Red Hat | Red Hat OpenShift Builds 1.8.1 |
Unaffected:
1784121108 , < *
(rpm)
cpe:/a:redhat:openshift_builds:1.8::el9 |
|
| Red Hat | Red Hat OpenShift Builds 1.8.1 |
Unaffected:
1783612119 , < *
(rpm)
cpe:/a:redhat:openshift_builds:1.8::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932114 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782931768 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932104 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783536000 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783535989 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783536515 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932521 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783018461 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783018421 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932812 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783537001 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932919 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783537586 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782932969 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933015 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933042 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783537392 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933235 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933251 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783537955 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933417 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783537742 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782933602 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1783019377 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782934054 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782934036 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat Openshift Data Foundation 4.22 |
Unaffected:
1782934284 , < *
(rpm)
cpe:/a:redhat:openshift_data_foundation:4.22::el9 |
|
| Red Hat | Red Hat OpenShift GitOps 1.19 |
Unaffected:
1785149260 , < *
(rpm)
cpe:/a:redhat:openshift_gitops:1.19::el8 |
|
| Red Hat | Red Hat OpenShift GitOps 1.2 |
Unaffected:
1785211346 , < *
(rpm)
cpe:/a:redhat:openshift_gitops:1.20::el9 |
|
| Red Hat | Red Hat Quay 3.1 |
Unaffected:
1783750447 , < *
(rpm)
cpe:/a:redhat:quay:3.10::el8 |
|
| Red Hat | Red Hat Quay 3.12 |
Unaffected:
1783751865 , < *
(rpm)
Unaffected: 1784353904 , < * (rpm) cpe:/a:redhat:quay:3.12::el8 |
|
| Red Hat | Red Hat Quay 3.15 |
Unaffected:
1784351966 , < *
(rpm)
cpe:/a:redhat:quay:3.15::el8 |
|
| Red Hat | Red Hat Quay 3.16 |
Unaffected:
1783955846 , < *
(rpm)
cpe:/a:redhat:quay:3.16::el9 |
|
| Red Hat | Red Hat Quay 3.9 |
Unaffected:
1784125838 , < *
(rpm)
cpe:/a:redhat:quay:3.9::el8 |
|
| Red Hat | Red Hat Trusted Artifact Signer 1.4 |
Unaffected:
4-1.4.2 , < *
(rpm)
Unaffected: 4-1.4.3 , < * (rpm) cpe:/a:redhat:trusted_artifact_signer:1.4::el9 |
|
| Red Hat | Assisted Installer for Red Hat OpenShift Container Platform 2 |
cpe:/a:redhat:assisted_installer:2
|
|
| Red Hat | cert-manager Operator for Red Hat OpenShift |
cpe:/a:redhat:cert_manager:1
|
|
| Red Hat | ExternalDNS Operator |
cpe:/a:redhat:ext_dns_optr:1
|
|
| Red Hat | External Secrets Operator for Red Hat OpenShift |
cpe:/a:redhat:external_secrets_operator:1
|
|
| Red Hat | Logging Subsystem for Red Hat OpenShift |
cpe:/a:redhat:logging:6
|
|
| Red Hat | OpenShift Pipelines |
cpe:/a:redhat:openshift_pipelines:1
|
|
| Red Hat | OpenShift Serverless |
cpe:/a:redhat:serverless:1
|
|
| Red Hat | Red Hat Ceph Storage 9 |
cpe:/a:redhat:ceph_storage:9
|
|
| 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 Enterprise Linux AI (RHEL AI) 3 |
cpe:/a:redhat:enterprise_linux_ai:3
|
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat OpenShift Virtualization 4 |
cpe:/a:redhat:container_native_virtualization:4
|
|
| Red Hat | Red Hat OpenStack Platform 16.2 |
cpe:/a:redhat:openstack:16.2
|
|
| Red Hat | Red Hat OpenStack Platform 17.1 |
cpe:/a:redhat:openstack:17.1
|
|
| Red Hat | Red Hat OpenStack Platform 18.0 |
cpe:/a:redhat:openstack:18.0
|
|
| Red Hat | Red Hat Quay 3 |
cpe:/a:redhat:quay:3
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-42508",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-22T18:43:40.584666Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-22T18:44:33.483Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"affected": [
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10.2"
],
"defaultStatus": "affected",
"packageName": "podman",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "7:5.8.2-4.el10_2",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:enterprise_linux:8"
],
"defaultStatus": "affected",
"packageName": "container-tools:rhel8",
"product": "Red Hat Enterprise Linux 8",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "8100020260701102925.afee755d",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:rhel_aus:8.6"
],
"defaultStatus": "affected",
"packageName": "container-tools:rhel8",
"product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "8060020260803064027.ad008a3a",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:rhel_eus_long_life:8.6"
],
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"title": "golang.org/x/crypto/ssh/knownhosts: golang: golang.org/x/crypto/ssh/knownhosts: Revocation bypass via unchecked SignatureKey",
"x_adpType": "supplier",
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"value": "Omar Khaleel Ibrahim - mr3okk"
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"value": "Previously, a revoked \u0027SignatureKey\u0027 belonging to a CA was not correctly checked for revocation. Now, both the \u0027key\u0027 and \u0027key.SignatureKey\u0027 are checked for @revoked."
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"url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
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{
"url": "https://pkg.go.dev/vuln/GO-2026-5021"
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"title": "Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts"
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