Access of Resource Using Incompatible Type ('Type Confusion') Affecting qt5-qtsvg package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.28% (20th percentile)

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  • Snyk IDSNYK-RHEL8-QT5QTSVG-16745693
  • published18 May 2026
  • disclosed6 May 2026

Introduced: 6 May 2026

CVE-2026-6210  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:8 qt5-qtsvg.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qt5-qtsvg package and not the qt5-qtsvg package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image.

When processing SVG marker references, the renderer retrieves a node by its id attribute and casts it to QSvgMarker* without verifying the node type. A non-marker element (such as a <line> element) that references itself as a marker triggers an out-of-bounds heap read due to the object size difference between QSvgLine and QSvgMarker, followed by an endless recursion that bypasses the marker recursion guard through incorrect virtual dispatch. The result is an application crash (denial of service).

This issue affects Qt SVG:  from 6.7.0 before 6.8.8, from 6.9.0 before 6.11.1.

CVSS Base Scores

version 3.1