CVE-2026-8168
High
Description
Uncontrolled recursion in the SVG parser and renderer of the Qt SVG module (QtSvg) in Qt Group Qt allows attackers to cause a denial of service (application crash via stack exhaustion) via a crafted SVG file with deeply nested elements.
SeverityHigh
CVSS7.1
Exploit probability—
ProductQt
PublishedOct 19, 2026
First seenOct 19, 2026
Weakness typeCWE-674CWE-674
How to fix
Update
- qt qt6.8.9, 6.11.2 or later
Patches
- codereview.qt-project.org/c/qt/qtsvg/+/730591
- codereview.qt-project.org/c/qt/qtsvg/+/730501
- codereview.qt-project.org/c/qt/qtsvg/+/731257
- codereview.qt-project.org/c/qt/qtsvg/+/730892
- codereview.qt-project.org/c/qt/qtsvg/+/733245
- codereview.qt-project.org/c/qt/qtsvg/+/738811
- codereview.qt-project.org/c/qt/qtsvg/+/730590
- codereview.qt-project.org/c/qt/qtsvg/+/743488
- codereview.qt-project.org/c/qt/qtsvg/+/748966
- codereview.qt-project.org/c/qt/qtsvg/+/756512
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| qt qt | 4.1.0 ≤ v < 6.8.9, 6.9.0 ≤ v < 6.11.2 | 6.8.9, 6.11.2 |
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