Bug 2539372 (CVE-2026-78253)

Summary: CVE-2026-78253 qt: Qt: Denial of Service via uncontrolled recursion in XML processing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Qt. An attacker can exploit uncontrolled recursion in the `QXmlStreamReader::readElementText()` function by providing a specially crafted XML document. This can lead to a denial of service (DoS), causing the application to crash due to stack exhaustion.
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: 2539388, 2539389    
Bug Blocks:    

Description OSIDB Bzimport 2026-09-23 11:52:05 UTC
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.