CVE-2026-24408CWE-352

sigstore has CSRF possibility in OIDC authentication during signing

published January 26, 2026

CVSS v3.1
0.0
EPSS
0%
Percentile
7.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
0.0 · NONE
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00178 · 7.0th percentile
Weakness
CWE-352 · Cross-Site Request Forgery (CSRF)
Published
2026-01-26T22:21Z
EPSS history
Timeline
  • 26 JAN 22:21Z
    sigstore has CSRF possibility in OIDC authentication during signing
    cvelistv5