sigstore has CSRF possibility in OIDC authentication during signing
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 0epss 0.2%
exploitation probability
0.2%top 95% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N
Affected products
sigstore · sigstore-python