Bug 2447328

Summary:	CVE-2026-28356 python-multipart: denial of service via maliciously crafted HTTP or multipart segment headers [fedora-43]
Product:	[Fedora] Fedora	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	python-multipart	Assignee:	Carl George 🎩 <carl>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	43	CC:	carl, python-packagers-sig
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---	Flags:	fedora-admin-xmlrpc: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["08168a89-a034-414a-bc8f-64b12f6401c6"]}
Fixed In Version:	python-multipart-1.3.1-1.fc43	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-03-25 01:39:36 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:	2447059

Description Guilherme de Almeida Suckevicz 2026-03-13 14:12:22 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 Carl George 🎩 2026-03-16 22:51:58 UTC

This only affects f43, not f44 or rawhide.

Comment 2 Fedora Update System 2026-03-16 23:18:16 UTC

FEDORA-2026-5c75eb75d1 (python-multipart-1.3.1-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5c75eb75d1

Comment 3 Fedora Update System 2026-03-17 03:08:47 UTC

FEDORA-2026-5c75eb75d1 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-5c75eb75d1`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-5c75eb75d1

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

Comment 4 Guilherme de Almeida Suckevicz 2026-03-20 14:59:12 UTC

Hi @carl, please do not update the summary of this tracker bug. It's used to link this BZ to the CVE-2026-28356.

Thanks.

Comment 5 Fedora Update System 2026-03-25 01:39:36 UTC

FEDORA-2026-5c75eb75d1 (python-multipart-1.3.1-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.