Is CVE-2026-31830 actively exploited?

No active exploitation of CVE-2026-31830 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-31830 be exploited remotely?

Yes. CVE-2026-31830 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-31830?

CVE-2026-31830 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-31830

HIGH

CVE-2026-31830

CWE-252Published: March 10, 2026· Updated: Mar 11, 2026

7.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.8th

Official Description

sigstore-ruby is a pure Ruby implementation of the sigstore verify command from the sigstore/cosign project. Prior to 0.2.3, Sigstore::Verifier#verify does not propagate the VerificationFailure returned by verify_in_toto when the artifact digest does not match the digest in the in-toto attestation subject. As a result, verification of DSSE bundles containing in-toto statements returns VerificationSuccess regardless of whether the artifact matches the attested subject. This vulnerability is fixed in 0.2.3.

NVD Source

Technical Analysis

CVE-2026-31830 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.