Denial-of-service vulnerability in the SVG parser and renderer impacts Qt

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-8168
StatePUBLISHED
AssignerQt
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-19 14:17:08 UTC
Updated2026-10-19 15:17:09 UTC
DescriptionUncontrolled 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.

Risk And Classification

Primary CVSS: v4.0 7.1 HIGH from a59d8014-47c4-4630-ab43-e1b13cbe58e3

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-674 | CWE-674 CWE-674 Uncontrolled Recursion

VersionSourceTypeScoreSeverityVector
4.0a59d8014-47c4-4630-ab43-e1b13cbe58e3Secondary7.1HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS7.1HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
Confidentiality
None
Integrity
None
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Qt Qt affected 4.1.0 6.8.9 python Not specified
CNA Qt Qt affected 6.9.0 6.11.2 python Not specified
CNA Qt Qt unknown 4.1.0 python Not specified

References

ReferenceSourceLinkTags
codereview.qt-project.org/c/qt/qtsvg/+/738811 a59d8014-47c4-4630-ab43-e1b13cbe58e3 codereview.qt-project.org
codereview.qt-project.org/c/qt/qtsvg/+/748966 a59d8014-47c4-4630-ab43-e1b13cbe58e3 codereview.qt-project.org
codereview.qt-project.org/c/qt/qtsvg/+/743488 a59d8014-47c4-4630-ab43-e1b13cbe58e3 codereview.qt-project.org
codereview.qt-project.org/c/qt/qtsvg/+/733245 a59d8014-47c4-4630-ab43-e1b13cbe58e3 codereview.qt-project.org
codereview.qt-project.org/c/qt/qtsvg/+/730501 a59d8014-47c4-4630-ab43-e1b13cbe58e3 codereview.qt-project.org
codereview.qt-project.org/c/qt/qtsvg/+/730590 a59d8014-47c4-4630-ab43-e1b13cbe58e3 codereview.qt-project.org
codereview.qt-project.org/c/qt/qtsvg/+/731257 a59d8014-47c4-4630-ab43-e1b13cbe58e3 codereview.qt-project.org
wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products a59d8014-47c4-4630-ab43-e1b13cbe58e3 wiki.qt.io
codereview.qt-project.org/c/qt/qtsvg/+/730591 a59d8014-47c4-4630-ab43-e1b13cbe58e3 codereview.qt-project.org
codereview.qt-project.org/c/qt/qtsvg/+/756512 a59d8014-47c4-4630-ab43-e1b13cbe58e3 codereview.qt-project.org
codereview.qt-project.org/c/qt/qtsvg/+/730892 a59d8014-47c4-4630-ab43-e1b13cbe58e3 codereview.qt-project.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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