CVE-2026-24408 NONE

CVE-2026-24408: sigstore has CSRF possibility in OIDC authentication during signing

Vendor Sigstore
Product sigstore-python
Weakness CWE-352 · CSRF
Published January 26, 2026
Last update January 27, 2026
View on NVD All CVEs

CVSS base score

0.0/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 26, 2026 CVE published
January 27, 2026 Record updated