CVE-2026-24408

NONE

sigstore-python < 4.2.0 - Cross-Site Request Forgery in OAuth Authentication Flow

Title source: llm
STIX 2.1

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.

References (3)

Core 3

Scores

CVSS v3 0.0
EPSS 0.0016
EPSS Percentile 5.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-352
Status published
Products (2)
linuxfoundation/sigstore-python < 4.2.0
pypi/sigstore 0 - 4.2.0PyPI
Published Jan 26, 2026
Tracked Since Feb 18, 2026