Bug 2418677 (CVE-2025-61727) - CVE-2025-61727 golang: crypto/x509: excluded subdomain constraint does not restrict wildcard SANs
Summary: CVE-2025-61727 golang: crypto/x509: excluded subdomain constraint does not re...
Keywords:
Status: NEW
Alias: CVE-2025-61727
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-03 20:01 UTC by OSIDB Bzimport
Modified: 2026-01-03 08:28 UTC (History)
149 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2025-12-03 20:01:45 UTC 
An 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.
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