CVE-2026-31830
7.5 · HIGHOverview
CVE-2026-31830 is a high-severity vulnerability affecting sigstore sigstore. It was published on March 10, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from sigstore. Update sigstore to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| sigstore | sigstore | >= 0, < 0.2.3 | Affected |
Frequently Asked Questions
What is CVE-2026-31830?
CVE-2026-31830 is a high-severity vulnerability affecting sigstore sigstore. It was published on March 10, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-31830?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-31830?
Check the references section for vendor advisories and patches from sigstore. Update sigstore to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-31830?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-31830 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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