CVE-2026-31830

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/sigstore/sigstore-ruby/security/advisories/GHSA-mhg6-2q2v-9h2c	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:sigstore:sigstore:*:*:*:*:*:ruby:*:*

History

No history.

Information

Published : 2026-03-10 22:16

Updated : 2026-03-20 15:19

NVD link : CVE-2026-31830

Mitre link : CVE-2026-31830

CVE.ORG link : CVE-2026-31830

JSON object : View

Products Affected

sigstore

sigstore

CWE

CWE-252

Unchecked Return Value

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