Bug 2539389

Summary: CVE-2026-78253 qt6: Qt: Denial of Service via uncontrolled recursion in XML processing [fedora-all]
Product: [Fedora] Fedora Reporter: Marian Rehak <mrehak>
Component: qt6Assignee: Jan Grulich <jgrulich>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: jgrulich, kde-sig
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["b3ca2be6-1808-4be9-b386-936b8ab0a765"]}
Fixed In Version: Doc Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2539372    

Description Marian Rehak 2026-09-23 12:39:24 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.

Uncontrolled recursion in QXmlStreamReader::readElementText() in Qt Group Qt allows attackers to cause a denial of service (application crash via stack exhaustion) via a crafted XML document.