Uncontrolled recursion in QDomDocument/QDomNode serialization causes stack exhaustion (QtXml) (CVE-2026-11573) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-11573

Uncontrolled recursion in QDomDocument/QDomNode serialization causes stack exhaustion (QtXml)

Answer in brief

CVE-2026-11573 records a Unknown severity vulnerability in Uncontrolled recursion in QDomDocument/QDomNode serialization causes stack exhaustion (QtXml). The current sources do not mark it as known exploited. The current feed maps qt/qt (generic), qt/qt (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 8, 2026Updated Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 8, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps qt/qt (generic), qt/qt (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
qt/qtgeneric	>=6.7.0 <6.8.2	6.8.2
qt/qtgeneric	>=2.2.0 <6.8.2	6.8.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for qt/qt, qt/qt.
Review the reported fix. Update qt/qt to 6.8.2; qt/qt to 6.8.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 8, 2026

Sources and claim methodology

Source referencecodereview.qt-project.org

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.