CVE-2026-97845
Uncontrolled recursion vulnerability in QXmlSimpleReader XML parsing impacts Qt
An uncontrolled recursion vulnerability has been discovered in the Qt QXmlSimpleReader XML parsing functionality of the Qt 5 Core Compatibility APIs module (Qt 6) and the Qt XML module (Qt 5).
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: QtFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: QtFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: QtFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: QtFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: QtFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: QtAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| qt qt |
≥ 0; < 5.0.0 (unknown, python) ≥ 5.0.0; < 6.8.10 (affected, python) ≥ 6.9.0; < 6.11.3 (affected, python) Other versions: unaffected |
CNA: Qt |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 4.3 medium |
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/U:Green | CNA: Qt |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://www.qt.io/security-advisories?search=CVE-2026-97845CNA: Qt · vendor-advisory
- https://codereview.qt-project.org/c/qt/qt5compat/+/771290CNA: Qt · patch
- https://codereview.qt-project.org/c/qt/qt5compat/+/774512CNA: Qt · patch
- https://codereview.qt-project.org/c/qt/qt5compat/+/774513CNA: Qt · patch
- https://codereview.qt-project.org/c/qt/qt5compat/+/774632CNA: Qt · patch
- https://codereview.qt-project.org/c/qt/qt5compat/+/760219CNA: Qt · patch
- https://codereview.qt-project.org/c/qt/qt5compat/+/760220CNA: Qt · patch
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