CVE-2025-61727

Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509

CVSS 6.5 MEDIUMEPSS 0.3%

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Produtos afetados

Go standard library · crypto/x509

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Referências

https://go.dev/cl/723900 https://go.dev/issue/76442 https://groups.google.com/g/golang-announce/c/8FJoBkPddm4 https://pkg.go.dev/vuln/GO-2025-4175