Bug 2437469

Summary:	CVE-2026-25537 python-uv-build: jsonwebtoken has Type Confusion that leads to potential authorization bypass [fedora-43]
Product:	[Fedora] Fedora	Reporter:	Jon Moroney <jmoroney>
Component:	python-uv-build	Assignee:	Ben Beasley <code>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	43	CC:	code, decathorpe, mhroncok, python-packagers-sig, rust-sig
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["09fb8d68-0216-4717-a426-d5a4d523bb5d"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-02-10 11:12:03 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2436945

Description Jon Moroney 2026-02-06 23:33:16 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Comment 1 Ben Beasley 2026-02-07 07:14:31 UTC

I’ve proposed a backport of the fix for this CVE in https://src.fedoraproject.org/rpms/rust-jsonwebtoken/pull-request/1. This bug can be closed if that PR is merged and built, and then python-uv-build is rebuilt with the resulting rust-jsonwebtoken package.

Comment 2 Fabio Valentini 2026-02-07 16:05:29 UTC

Note that python-uv-build does not even depend on rust-jsonwebtoken, so this appears to be a false positive.