Bug 2449470

Summary:	CVE-2026-32874 python-ujson: UltraJSON: Denial of Service due to memory leak when parsing large integers [epel-9]
Product:	[Fedora] Fedora EPEL	Reporter:	Sandipan Roy <saroy>
Component:	python-ujson	Assignee:	kushaldas@gmail.com <mail>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	epel9	CC:	code, igor.raits, mail, python-packagers-sig
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["8ccf21d3-d9f5-4c7b-ad34-eed902d44fbe"]}
Fixed In Version:	python-ujson-5.8.0-2.el9	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-03-29 00:42:32 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:	2449411

Description Sandipan Roy 2026-03-20 06:43:45 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 2026-03-20 07:02:46 UTC

More details in https://www.cve.org/CVERecord?id=CVE-2026-32874 and https://github.com/ultrajson/ultrajson/security/advisories/GHSA-wgvc-ghv9-3pmm; fixed in 5.12.0 with https://github.com/ultrajson/ultrajson/commit/4baeb950df780092bd3c89fc702a868e99a3a1d2.

We can’t update python-ujson past 5.8.0 in EPEL9 because 5.9.0, https://github.com/ultrajson/ultrajson/releases/tag/5.9.0, contained a breaking change. However, it looks like it will be possible to cleanly backport the commit that fixes this particular defect.

Comment 2 Fedora Update System 2026-03-20 07:18:50 UTC

FEDORA-EPEL-2026-37ef30e238 (python-ujson-5.8.0-2.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-37ef30e238

Comment 3 Fedora Update System 2026-03-21 01:23:49 UTC

FEDORA-EPEL-2026-37ef30e238 has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-37ef30e238

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-03-29 00:42:32 UTC

FEDORA-EPEL-2026-37ef30e238 (python-ujson-5.8.0-2.el9) has been pushed to the Fedora EPEL 9 stable repository.
If problem still persists, please make note of it in this bug report.