What is CVE-2026-44310?

CVE-2026-44310 is a medium-severity vulnerability in Sigstore Gitsign, classified under Improper Validation of Array Index. CVSS score: 5.4/10. Published 2026-05-15.

How severe is CVE-2026-44310?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Sigstore Gitsign

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.Verify() in pkg/git/verifier.go unconditionally dereferences certs[0] after sd.GetCertificates() wi…

EPSS: 0.000 (8.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L.

Affected products

Sigstore Gitsign — versions >= 0.4.0, < 0.15.0

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index
CWE-390

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-44310?: CVE-2026-44310 is a medium-severity vulnerability in Sigstore Gitsign, classified under Improper Validation of Array Index. CVSS score: 5.4/10. Published 2026-05-15.
How severe is CVE-2026-44310?: Medium severity. CVSS v3 base score is 5.4 out of 10.