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.

INFO

Published Date :

2026-01-26T22:21:35.047Z

Last Modified :

2026-01-27T21:35:14.119Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-24408 vulnerability.

Vendors Products
Linuxfoundation
  • Sigstore-python
Sigstore
  • Sigstore-python
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-24408.

URL Resource
https://github.com/sigstore/sigstore-python/commit/5e77497fe8f0b202bdd118949074ec2f20da69aa cve-icon cve-icon
https://github.com/sigstore/sigstore-python/releases/tag/v4.2.0 cve-icon cve-icon
https://github.com/sigstore/sigstore-python/security/advisories/GHSA-hm8f-75xx-w2vr cve-icon cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact