CVE-2026-11573 (GCVE-0-2026-11573)

Vulnerability from cvelistv5 – Published: 2026-09-08 12:06 – Updated: 2026-09-11 09:31
VLAI
Title
Uncontrolled recursion in QDomDocument/QDomNode serialization causes stack exhaustion (QtXml)
Summary
Uncontrolled recursion (CWE-674) in the QDomDocument/QDomNode serialization path of the Qt XML module (QtXml, qtbase). QDomElementPrivate::save() and QDomNodePrivate::save() recurse mutually, consuming one stack frame per level of element nesting with no depth limit, no configurable bound and no error return. A document with deeply nested elements parses successfully but exhausts the call stack and terminates the process when serialized. Reachable via QDomDocument::toByteArray() (Qt 4.0 and later), QDomDocument::toString(), QDomDocument::toCString(), QDomNode::save(), and operator<<(QTextStream&, const QDomNode&). Denial of service only — no code execution and no memory disclosure.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 13:43 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
qt qt Affected: 2.2.0 , < 6.8.2 (python)
    cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2024-12-05 00:00
Show details on NVD website
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