CVE-2026-42508CRITICAL 9.1EPSS p49.6%

CVE-2026-42508CVE-2026-42508

golang / crypto

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.

Scoring

CVSS 3.19.1 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS0.65% probability of exploitation · percentile 49.6% · 2026-10-05T12:00:23Z
Published2026-05-22
Last modified2026-09-15

References

  1. https://go.dev/cl/781220
  2. https://go.dev/issue/79568
  3. https://groups.google.com/g/golang-announce/c/a082jnz-LvI
  4. https://pkg.go.dev/vuln/GO-2026-5021

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.