CVE-2025-22874High· 7.5▾ TwilightA flaw was found in Go's crypto/x509 package. This vulnerability allows improper certificate validation, bypassing policy constraints via using ExtKeyUsageAny in VerifyOptions.KeyUsages.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 27.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.3%
— → 7.5
none → high
7.5 → —
high → none
— → 7.5
none → high
0.3% → 0.4%
Last analysed / modified upstream
A flaw was found in Go's crypto/x509 package. This vulnerability allows improper certificate validation, bypassing policy constraints via using ExtKeyUsageAny in VerifyOptions.KeyUsages.
crypto/x509: Usage of ExtKeyUsageAny disables policy validation in crypto/x509 — rated Important by Red Hat. Released 2025-06-11, updated 2026-10-15.
Affected:
Fixed:
No fix planned:
Not affected:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2025:10677 For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:47719 For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:47712
Workarounds / mitigations:
Affected packages:
stdlib >= 1.24.0-0, < 1.24.4Patched in:
stdlib 1.24.4Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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