UNKNOWN Go
Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509
GO-2025-4175 · BIT-golang-2025-61727 · CVE-2025-61727
Published · Modified
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Description
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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