CVE Watch26 oct 2026

CVE-2026-44310

Gitsign 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.

CVSS

5.4

Medio

EPSS

0.1%

KEV

—

Exploit Today

0-100

Publicado: 15 may 2026 · Última mod.: 26 oct 2026 · CWE-129 · CWE-390

EPSS · 30d

0.1%EPSS · 30 días0.2%

2026-10-042026-11-01

Descripción técnica

Gitsign 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.

Referencias oficiales

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