CVE-2025-61727

NameCVE-2025-61727
DescriptionAn 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1121847, 1121848

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
golang-1.15 (PTS)bullseye1.15.15-1~deb11u4vulnerable
golang-1.19 (PTS)bookworm1.19.8-2vulnerable
golang-1.24 (PTS)trixie1.24.4-1vulnerable
forky, sid1.24.9-1vulnerable
golang-1.25 (PTS)forky, sid1.25.3-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
golang-1.15source(unstable)(unfixed)
golang-1.19source(unstable)(unfixed)
golang-1.24source(unstable)(unfixed)1121848
golang-1.25source(unstable)(unfixed)1121847

Notes

[bookworm] - golang-1.19 <no-dsa> (Minor issue)
https://groups.google.com/g/golang-announce/c/8FJoBkPddm4
https://github.com/golang/go/issues/76442
Fixed by: https://github.com/golang/go/commit/287017acebd27203aa3218abbd11ed65c2280cf8 (go1.25.5)
Fixed by: https://github.com/golang/go/commit/04db77a423cac75bb82cc9a6859991ae9c016344 (go1.24.11)

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