CVE-2026-24408

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

No CVSS.

References

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

Configurations

Configuration 1 (hide)

cpe:2.3:a:linuxfoundation:sigstore-python:*:*:*:*:*:*:*:*

History

02 Mar 2026, 21:19

Type	Values Removed	Values Added
References	~~() https://github.com/sigstore/sigstore-python/commit/5e77497fe8f0b202bdd118949074ec2f20da69aa -~~	() https://github.com/sigstore/sigstore-python/commit/5e77497fe8f0b202bdd118949074ec2f20da69aa - Patch
References	~~() https://github.com/sigstore/sigstore-python/releases/tag/v4.2.0 -~~	() https://github.com/sigstore/sigstore-python/releases/tag/v4.2.0 - Product, Release Notes
References	~~() https://github.com/sigstore/sigstore-python/security/advisories/GHSA-hm8f-75xx-w2vr -~~	() https://github.com/sigstore/sigstore-python/security/advisories/GHSA-hm8f-75xx-w2vr - Vendor Advisory
First Time		Linuxfoundation Linuxfoundation sigstore-python
CPE		cpe:2.3:a:linuxfoundation:sigstore-python::::::::

26 Jan 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-26 23:16

Updated : 2026-03-02 21:19

NVD link : CVE-2026-24408

Mitre link : CVE-2026-24408

CVE.ORG link : CVE-2026-24408

JSON object : View

Products Affected

linuxfoundation

sigstore-python

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

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