Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509
Exact source revision recorded 24 Oct 2026 13:19:41 UTC. It does not establish the source's current position. Latest evidence.
osv · GO-2025-4175
PublishedAn excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com.
- Source published
- 2 Dec 2025 20:55:55 UTC
- Source modified
- 15 May 2026 10:59:24 UTC
- Observed here
- 24 Oct 2026 13:19:41 UTC
- Source terms
- OSV · upstream source license applies
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