CVE-2026-44310

NameCVE-2026-44310
DescriptionGitsign is a keyless Sigstore to signing tool for Git commits with your a GitHub / OIDC identity. From 0.4.0 to before 0.15.0, CertVerifier.Verify() in pkg/git/verifier.go unconditionally dereferences certs[0] after sd.GetCertificates() without checking the slice length. A CMS/PKCS7 signed message with an empty certificate set is a structurally valid DER payload; GetCertificates() returns an empty slice with no error, causing an immediate index-out-of-range panic. On the gitsign --verify code path (the GPG-compatible mode invoked by git verify-commit), the panic is silently recovered by internal/io/streams.go's Wrap() function, which returns nil instead of an error. main.go then exits with code 0, causing exit-code-only verification callers to interpret the failed verification as success. This vulnerability is fixed in 0.15.0.
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 Bugs1136789

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
gitsign (PTS)trixie0.13.0-2vulnerable
forky0.13.0-4vulnerable
sid0.14.0-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
gitsignsource(unstable)(unfixed)1136789

Notes

[trixie] - gitsign <no-dsa> (Minor issue)
https://github.com/sigstore/gitsign/security/advisories/GHSA-7c37-gx6w-8vc5
Fixed by: https://github.com/sigstore/gitsign/commit/d7565c405e188d1ad41d85d5f46adaeec4b85941 (v0.15.0)

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