Vulnerability Description
sigstore-js provides JavaScript libraries for interacting with Sigstore services. Prior to 0.7.1, getRegistryCredentials() reads credentials from the Docker config file and selects an entry by checking whether any configured auth key contains the target registry string. Because this is a substring match rather than an exact host match, credentials configured for one registry can be selected for and transmitted to a different registry whose hostname has a substring relationship with a configured auth key. This issue is fixed in version 0.7.1.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/sigstore/sigstore-js/commit/85c58380758b97ce1b74ef470e55cc21f
- https://github.com/sigstore/sigstore-js/releases/tag/%40sigstore%2Foci%400.7.1
- https://github.com/sigstore/sigstore-js/security/advisories/GHSA-pf56-329r-95rw
FAQ
What is CVE-2026-59891?
CVE-2026-59891 is a vulnerability with a CVSS score of 9.6 (CRITICAL). sigstore-js provides JavaScript libraries for interacting with Sigstore services. Prior to 0.7.1, getRegistryCredentials() reads credentials from the Docker config file and selects an entry by checkin...
How severe is CVE-2026-59891?
CVE-2026-59891 has been rated CRITICAL with a CVSS base score of 9.6/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-59891?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.