CVE-2026-78253

Denial-of-service (stack-exhaustion) vulnerability in QXmlStreamReader::readElementText() impacts Qt

Published Sep 23, 2026 CVSS 4.0 · 2.3 Low EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-776
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Denial-of-service (stack-exhaustion) vulnerability in QXmlStreamReader::readElementText() impacts Qt
First Time appeared Qt
Qt qt
Weaknesses CWE-674
CPEs cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*
Vendors & Products Qt
Qt qt
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:N/R:U/RE:L/U:Green'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Qt
Published
Updated
Sep 23, 2026, 2:36 PM
Reserved
Aug 24, 2026, 7:14 AM
Status
Awaiting Analysis
Published
Sep 23, 2026, 12:17 PM
Modified
Sep 24, 2026, 9:08 PM
Severity
Moderate
Public date
Sep 23, 2026, 11:39 AM