Bug 2486949 - CVE-2026-44660 python-ujson: UltraJSON: Memory leak leading to Denial of Service [epel-all]
Summary: CVE-2026-44660 python-ujson: UltraJSON: Memory leak leading to Denial of Serv...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: python-ujson
Version: epel10
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Ben Beasley
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["2b4eb773-34f6-4036-b574-8...
Depends On:
Blocks: CVE-2026-44660
TreeView+ depends on / blocked
 
Reported: 2026-06-09 09:58 UTC by Vipul Nair
Modified: 2026-06-19 00:48 UTC (History)
4 users (show)

Fixed In Version: python-ujson-5.8.0-5.el9
Clone Of:
Environment:
Last Closed: 2026-06-19 00:48:27 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Vipul Nair 2026-06-09 09:58:30 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 2026-06-09 10:17:20 UTC
From https://www.cve.org/CVERecord?id=CVE-2026-44660, this is fixed in upstream release 5.12.1, which has already reached stable in all active EPEL10 branches.

For EPEL9, python-ujson is at 5.8.0 due to breaking changes in 5.9.0, https://src.fedoraproject.org/rpms/python-ujson/pull-request/13. There are probably also some dependency issues involved in updating to the latest release, but it doesn’t matter, because I don’t think this CVE merits asking for an Updates Policy exception. However, the commit that fixed the problem, https://github.com/ultrajson/ultrajson/commit/82af1d0ac01d09aa40c887b460d44b9d9f4bccd9, is straightforward and self-contained enough that it can be backported to 5.8.0 for EPEL9.

Comment 2 Fedora Update System 2026-06-09 13:18:46 UTC
FEDORA-EPEL-2026-204e38b37f (python-ujson-5.8.0-5.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-204e38b37f

Comment 3 Fedora Update System 2026-06-10 01:34:43 UTC
FEDORA-EPEL-2026-204e38b37f 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-2026-204e38b37f

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

Comment 4 Fedora Update System 2026-06-19 00:48:27 UTC
FEDORA-EPEL-2026-204e38b37f (python-ujson-5.8.0-5.el9) has been pushed to the Fedora EPEL 9 stable repository.
If problem still persists, please make note of it in this bug report.


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