medium6.5
CVE-2025-61727
An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Golang | Go | before 1.24.11 from 1.25 before 1.25.5 |