Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts
Summary
| CVE | CVE-2026-42508 |
|---|---|
| State | PUBLISHED |
| Assigner | Go |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-22 04:16:25 UTC |
| Updated | 2026-07-31 13:18:37 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 9.1 CRITICAL from ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS: 0.005680000 probability, percentile 0.438850000 (date 2026-08-01)
Problem Types: CWE-295 | CWE-295: Improper Certificate Validation | CWE-295 Improper Certificate Validation
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | DECLARED | 9.1 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| 3.1 | ADP | CVSS | 7.4 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 9.1 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| 3.1 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | Secondary | 7.4 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Golang.orgxcrypto | Golang.org/x/crypto/ssh/knownhosts | affected 0.52.0 semver | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | unaffected 7:5.8.2-4.el10_2 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8 | unaffected 8100020260701102925.afee755d * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | unaffected 6:5.8.2-4.el9_8 * rpm | Not specified |
| ADP | Red Hat | RHEM 1.0 For RHEL 9 | unaffected 0:1.0.3-1.el9em * rpm | Not specified |
| ADP | Red Hat | RHEM 1.1 For RHEL 10 | unaffected 0:1.1.3-1.el10em * rpm | Not specified |
| ADP | Red Hat | RHEM 1.1 For RHEL 9 | unaffected 0:1.1.3-1.el9em * rpm | Not specified |
| ADP | Red Hat | DevWorkspace Operator 0.42 | unaffected 1782401674 * rpm | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes 2.10 | unaffected 1784646026 * rpm | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes 2.8 | unaffected 1784646786 * rpm | Not specified |
| ADP | Red Hat | OpenShift API For Data Protection 1.6 | unaffected 1784058822 * rpm | Not specified |
| ADP | Red Hat | Red Hat Advanced Cluster Management For Kubernetes 2.11 | unaffected 1783813250 * rpm | Not specified |
| ADP | Red Hat | Red Hat Advanced Cluster Management For Kubernetes 2.13 | unaffected 1784740143 * rpm | Not specified |
| ADP | Red Hat | Red Hat Advanced Cluster Security For Kubernetes 4.10 | unaffected 1781686458 * rpm | Not specified |
| ADP | Red Hat | Red Hat Advanced Cluster Security For Kubernetes 4.9 | unaffected 1781686446 * rpm | Not specified |
| ADP | Red Hat | Red Hat Edge Manager 1.0 | unaffected 1783502025 * rpm | Not specified |
| ADP | Red Hat | Red Hat Edge Manager 1.1 | unaffected 1784196588 * rpm | Not specified |
| ADP | Red Hat | Red Hat Edge Manager 1.1 | unaffected 1784126780 * rpm | Not specified |
| ADP | Red Hat | Red Hat Hardened Images | unaffected 1.25.11-2.hum1 * rpm | Not specified |
| ADP | Red Hat | Red Hat Hardened Images | unaffected 1.26.4-2.hum1 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Builds 1.7.4 | unaffected 1783057868 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Builds 1.8.0 | unaffected 1784121108 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Builds 1.8.0 | unaffected 1783612119 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932114 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782931768 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932104 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783536000 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783535989 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783536515 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932521 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783018461 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783018421 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932812 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783537001 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932919 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783537586 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782932969 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933015 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933042 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783537392 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933235 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933251 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783537955 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933417 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783537742 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782933602 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1783019377 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782934054 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782934036 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.22 | unaffected 1782934284 * rpm | Not specified |
| ADP | Red Hat | Red Hat Quay 3.1 | unaffected 1783750447 * rpm | Not specified |
| ADP | Red Hat | Red Hat Quay 3.12 | unaffected 1783751865 * rpm | Not specified |
| ADP | Red Hat | Red Hat Quay 3.12 | unaffected 1784353904 * rpm | Not specified |
| ADP | Red Hat | Red Hat Quay 3.15 | unaffected 1784351966 * rpm | Not specified |
| ADP | Red Hat | Red Hat Quay 3.16 | unaffected 1783955846 * rpm | Not specified |
| ADP | Red Hat | Red Hat Quay 3.9 | unaffected 1784125838 * rpm | Not specified |
| ADP | Red Hat | Red Hat Trusted Artifact Signer 1.4 | unaffected 4-1.4.2 * rpm | Not specified |
| ADP | Red Hat | Red Hat Trusted Artifact Signer 1.4 | unaffected 4-1.4.3 * rpm | Not specified |
| ADP | Red Hat | Assisted Installer For Red Hat OpenShift Container Platform 2 | Not specified | Not specified |
| ADP | Red Hat | Builds For Red Hat OpenShift | Not specified | Not specified |
| ADP | Red Hat | Builds For Red Hat OpenShift | Not specified | Not specified |
| ADP | Red Hat | Builds For Red Hat OpenShift | Not specified | Not specified |
| ADP | Red Hat | Builds For Red Hat OpenShift | Not specified | Not specified |
| ADP | Red Hat | Builds For Red Hat OpenShift | Not specified | Not specified |
| ADP | Red Hat | External Secrets Operator For Red Hat OpenShift | Not specified | Not specified |
| ADP | Red Hat | Multicluster Engine For Kubernetes | Not specified | Not specified |
| ADP | Red Hat | OpenShift API For Data Protection | Not specified | Not specified |
| ADP | Red Hat | OpenShift Serverless | Not specified | Not specified |
| ADP | Red Hat | OpenShift Serverless | Not specified | Not specified |
| ADP | Red Hat | Red Hat Advanced Cluster Management For Kubernetes 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ceph Storage 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI RHEL AI 3 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift GitOps | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift GitOps | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Virtualization 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenStack Platform 16.2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenStack Platform 16.2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenStack Platform 17.1 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenStack Platform 18.0 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Quay 3 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2026:40118 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| groups.google.com/g/golang-announce/c/a082jnz-LvI | [email protected] | groups.google.com | Mailing List |
| access.redhat.com/errata/RHSA-2026:36797 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| go.dev/issue/79568 | [email protected] | go.dev | Issue Tracking |
| access.redhat.com/errata/RHSA-2026:41031 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:43692 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:23262 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:47735 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:36651 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:36808 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:47737 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:37387 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:26546 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:40945 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:43052 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:41036 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| pkg.go.dev/vuln/GO-2026-5021 | [email protected] | pkg.go.dev | Vendor Advisory |
| access.redhat.com/errata/RHSA-2026:26547 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:40262 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42508.json | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | security.access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:23264 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:41064 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | bugzilla.redhat.com | |
| go.dev/cl/781220 | [email protected] | go.dev | Issue Tracking |
| access.redhat.com/errata/RHSA-2026:37123 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:35833 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:42146 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:46885 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:36648 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:37072 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:36796 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:41066 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-42508 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:41019 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:42796 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:40138 | MITRE | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2026-05-22T04:01:49.515Z | Reported to Red Hat. |
| ADP | 2026-05-22T02:31:27.644Z | Made public. |
Solutions
ADP: RHSA-2026:41019: RHEM 1.1 for RHEL 10, RHEM 1.1 for RHEL 9
ADP: RHSA-2026:36796: RHEM 1.0 for RHEL 9
ADP: RHSA-2026:37072: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
ADP: RHSA-2026:35833: Red Hat Enterprise Linux AppStream (v. 8)
ADP: RHSA-2026:37123: Red Hat Enterprise Linux AppStream (v. 9)
ADP: RHSA-2026:36808: DevWorkspace Operator 0.42
ADP: RHSA-2026:43692: OpenShift API for Data Protection 1.6
ADP: RHSA-2026:41064: Red Hat Advanced Cluster Management for Kubernetes 2.11
ADP: RHSA-2026:47737: Red Hat Advanced Cluster Management for Kubernetes 2.13
ADP: RHSA-2026:26547: Red Hat Advanced Cluster Security for Kubernetes 4.10
ADP: RHSA-2026:26546: Red Hat Advanced Cluster Security for Kubernetes 4.9
ADP: RHSA-2026:36651: Red Hat Edge Manager 1.0
ADP: RHSA-2026:40945: Red Hat Edge Manager 1.1
ADP: RHSA-2026:40118: Red Hat Edge Manager 1.1
ADP: RHSA-2026:23262: Red Hat Hardened Images
ADP: RHSA-2026:23264: Red Hat Hardened Images
ADP: RHSA-2026:36648: Red Hat OpenShift Builds 1.7.4
ADP: RHSA-2026:41036: Red Hat OpenShift Builds 1.8.0
ADP: RHSA-2026:37387: Red Hat Openshift Data Foundation 4.22
ADP: RHSA-2026:42146: Red Hat Quay 3.12
ADP: RHSA-2026:43052: Red Hat Quay 3.12
ADP: RHSA-2026:42796: Red Hat Quay 3.15
ADP: RHSA-2026:41066: Red Hat Quay 3.16
ADP: RHSA-2026:41031: Red Hat Quay 3.1
ADP: RHSA-2026:40262: Red Hat Quay 3.9
ADP: RHSA-2026:36797: Red Hat Trusted Artifact Signer 1.4
ADP: RHSA-2026:46885: multicluster engine for Kubernetes 2.10
ADP: RHSA-2026:47735: multicluster engine for Kubernetes 2.8
There are currently no legacy QID mappings associated with this CVE.