5

CVE-2026-24408

sigstore has CSRF possibility in OIDC authentication during signing

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linuxfoundation ≫ Sigstore-python Version < 4.2.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.053
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5 1.6 3.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
security-advisories@github.com 0 1.6 0
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N
CWE-352 Cross-Site Request Forgery (CSRF)

The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

https://github.com/sigstore/sigstore-python/security/advisories/GHSA-hm8f-75xx-w2vr
Vendor Advisory
https://github.com/sigstore/sigstore-python/commit/5e77497fe8f0b202bdd118949074ec2f20da69aa
Patch
https://github.com/sigstore/sigstore-python/releases/tag/v4.2.0
Product
Release Notes