CVE-2026-42508

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-42508
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.

9.1 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://go.dev/cl/781220 Issue Tracking
https://go.dev/issue/79568 Issue Tracking
https://groups.google.com/g/golang-announce/c/a082jnz-LvI Mailing List
https://pkg.go.dev/vuln/GO-2026-5021 Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*
History

28 May 2026, 14:47

Type Values Removed Values Added
First Time Golang crypto
Golang
References () https://go.dev/cl/781220 - () https://go.dev/cl/781220 - Issue Tracking
References () https://go.dev/issue/79568 - () https://go.dev/issue/79568 - Issue Tracking
References () https://groups.google.com/g/golang-announce/c/a082jnz-LvI - () https://groups.google.com/g/golang-announce/c/a082jnz-LvI - Mailing List
References () https://pkg.go.dev/vuln/GO-2026-5021 - () https://pkg.go.dev/vuln/GO-2026-5021 - Vendor Advisory
CWE CWE-295
CPE cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*

22 May 2026, 19:17

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 9.1

22 May 2026, 04:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-22 04:16

Updated : 2026-05-28 14:47

NVD link : CVE-2026-42508

Mitre link : CVE-2026-42508

CVE.ORG link : CVE-2026-42508

JSON object : View

Products Affected

golang

  • crypto
CWE
CWE-295

Improper Certificate Validation