Cross-site Request Forgery (CSRF) Affecting sigstore package, versions [,4.2.0)
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.
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Test your applications- Snyk IDSNYK-PYTHON-SIGSTORE-15124046
- published28 Jan 2026
- disclosed26 Jan 2026
- creditJussi Kukkonen
Introduced: 26 Jan 2026
CVE-2026-24408 (opens in a new tab)How to fix?
Upgrade sigstore to version 4.2.0 or higher.
Overview
sigstore is an A tool for signing Python package distributions
Affected versions of this package are vulnerable to Cross-site Request Forgery (CSRF) via the OIDC authentication process, which fails to check the state parameter. An attacker in a MitM position can cause a user to sign data with an identity controlled by the attacker by intercepting and manipulating the authentication response.