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.
Published: 2026-05-22
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-5cgq-3rg8-m6cv golang.org/x/crypto/ssh/knownhosts vulnerable to auth bypass via unenforced @revoked status
Ubuntu USN Ubuntu USN USN-8447-2 LXD vulnerabilities
History

Thu, 28 May 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Golang crypto
Weaknesses CWE-295
CPEs cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*
Vendors & Products Golang crypto

Fri, 22 May 2026 22:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-665

Fri, 22 May 2026 21:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-640

Fri, 22 May 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 22 May 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Golang
Golang ssh
Vendors & Products Golang
Golang ssh

Fri, 22 May 2026 04:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-640

Fri, 22 May 2026 03:30:00 +0000

Type Values Removed Values Added
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.
Title Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Go

Published:

Updated: 2026-06-30T03:16:10.206Z

Reserved: 2026-04-28T00:21:12.792Z

Link: CVE-2026-42508

cve-icon Vulnrichment

Updated: 2026-05-22T18:43:51.337Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-22T04:16:25.440

Modified: 2026-06-17T10:47:57.267

Link: CVE-2026-42508

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-28T17:15:21Z

Weaknesses