CVE-2026-59891
CriticalCVSS 9.6Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
In sigstore-js prior to version 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.
Risk Assessment
The risk involves unauthorized disclosure of registry credentials, potentially leading to identity theft or unauthorized access to organizational resources.
Recommendation
Immediately upgrade sigstore-js to version 0.7.1 or later, which fixes the substring matching vulnerability.
Original NVD description (English source)
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.