CVE-2026-24408
sigstore has CSRF possibility in OIDC authentication during signing
- State
- Published
- Severity
- 0.0 None
- Published
- Jan 26, 2026
- Updated
- Jan 27, 2026
- Reserved
- Jan 22, 2026
Description
sigstore-python is a Python tool for generating and verifying Sigstore signatures. Prior to version 4.2.0, the sigstore-python OAuth authentication flow is susceptible to Cross-Site Request Forgery. `_OAuthSession` creates a unique "state" and sends it as a parameter in the authentication request but the "state" in the server response seems not not be cross-checked with this value. Version 4.2.0 contains a patch for the issue.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 0.0 None | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N | GitHub_M |
Weaknesses
- CWE-352 Cross-Site Request Forgery (CSRF)
Affected Products
| Product | Versions |
|---|---|
sigstore-pythonsigstore |
|
References
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