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Vulnerability record · CVE-2026-59891 · published 14 July 2026

CVE-2026-59891: Insufficiently protected credentials vulnerability

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.

9.6 CVSS 3.1 Critical EPSS 0.47% · top 61.5% CWE-522 · Insufficiently protected credentials Awaiting Analysis
9.6CVSS 3.1 base score
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
21 Jul 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References

LinkTags
https://github.com/sigstore/sigstore-js/commit/85c58380758b97ce1b74ef470e55cc21f9d3aa89
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

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Source: NIST National Vulnerability Database (record CVE-2026-59891), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.