Is CVE-2026-31830 actively exploited?

CVE-2026-31830 has no public evidence of in-the-wild exploitation as of 2026-03-20.

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

CVE-2026-31830 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

How do I patch CVE-2026-31830?

Patch guidance is available from sigstore security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-31830.

Fix CVE-2026-31830 - HIGH sigstore sigstore

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: none
Weaknesses: CWE-252

Metadata

Primary Vendor: SIGSTORE
Published: 3/10/2026
Last Modified: 3/20/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

sigstore : sigstore

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-31830. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-31830

View on NIST NVD

CVE-2026-31830 vulnerability