Unchecked Return Value Affecting sigstore package, versions <0.2.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RUBY-SIGSTORE-15627891
- published15 Mar 2026
- disclosed11 Mar 2026
- creditKasumi Hanazuki
Introduced: 11 Mar 2026
NewCVE-2026-31830 (opens in a new tab)How to fix?
Upgrade sigstore to version 0.2.3 or higher.
Overview
Affected versions of this package are vulnerable to Unchecked Return Value due to improper handling of the return value from the verify_in_toto function. An attacker can cause the verification process to incorrectly indicate success for DSSE bundles with mismatched in-toto subject digests by presenting a valid signed DSSE bundle for one artifact as a valid attestation for a different artifact.