Bug 2553083

Summary:	CVE-2026-35536 python-pep517: Tornado: Cookie attribute injection due to improper handling of cookie arguments [epel-all]
Product:	[Fedora] Fedora EPEL	Reporter:	Avinash Hanwate <ahanwate>
Component:	python-pep517	Assignee:	Orphan Owner <extras-orphan>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	epel10	CC:	encukou, extras-orphan, python-packagers-sig
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["98eca926-78cf-473c-b4dc-931cf2d14d0d"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		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:	2454716

Description Avinash Hanwate 2026-10-15 08:09:09 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.

In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters.