{"cve":"CVE-2026-44310","nvd":{"published":"2026-05-15T17:16:47.430","modified":"2026-10-26T14:10:00.130","status":"Deferred","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L","score":5.4},"cwes":["CWE-129","CWE-390"],"references":["https://github.com/sigstore/gitsign/security/advisories/GHSA-7c37-gx6w-8vc5","https://github.com/sigstore/gitsign/security/advisories/GHSA-7c37-gx6w-8vc5"],"products":[],"source":"nvd","synced_at":"2026-10-26T14:27:29.784594657+00:00"},"epss":{"cve":"CVE-2026-44310","score":0.00111,"percentile":0.01322,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-7c37-gx6w-8vc5","url":"https://osv.dev/vulnerability/GHSA-7c37-gx6w-8vc5","summary":"gitsign --verify panics on empty-certificate PKCS7 and exits 0, bypassing exit-code callers","modified":"2026-09-10T03:50:45.960224914Z","packages":[{"ecosystem":"Go","name":"github.com/sigstore/gitsign","purl":"pkg:golang/github.com/sigstore/gitsign","ranges":[">=0.4.0 <0.15.0"],"fixed":["0.15.0"]}]},{"id":"GO-2026-5212","url":"https://osv.dev/vulnerability/GO-2026-5212","summary":"gitsign --verify panics on empty-certificate PKCS7 and exits 0, bypassing exit-code callers in github.com/sigstore/gitsign","modified":"2026-06-25T19:45:15.293985308Z","packages":[{"ecosystem":"Go","name":"github.com/sigstore/gitsign","purl":"pkg:golang/github.com/sigstore/gitsign","ranges":[">=0.4.0 <0.15.0"],"fixed":["0.15.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}