Improper Verification of Cryptographic Signature Affecting @sigstore/verify package, versions <3.1.1
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JS-SIGSTOREVERIFY-17817052
- published4 Jul 2026
- disclosed1 Jul 2026
- creditUnknown
Introduced: 1 Jul 2026
NewCVE-2026-48815 (opens in a new tab)How to fix?
Upgrade @sigstore/verify to version 3.1.1 or higher.
Overview
@sigstore/verify is a Verification of Sigstore signatures
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature due to the certificateOIDs option being accepted by the public API but discarded before verification, resulting in required certificate extension OIDs never being checked. An attacker can bypass intended certificate extension constraints by presenting unauthorized certificates that satisfy the remaining verification checks.