CVE-2025-61727
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductGo
PublishedDec 3, 2025
First seenDec 3, 2025
Weakness typeCWE-295CWE-295
How to fix
Update
- golang go1.24.11, 1.25.5 or later
- stdlib1.24.11, 1.25.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| golang go | v < 1.24.11, 1.25 ≤ v < 1.25.5 | 1.24.11, 1.25.5 |
| stdlibGo | v < 1.24.11, 1.25.0 ≤ v < 1.25.5 | 1.24.11, 1.25.5 |
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