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CVE-2026-8168

qt5-qtsvg: qt6-qtsvg: qt: Denial of Service via deeply nested SVG elements

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Severity

Moderate

Red Hat Product Security

6.5

CVSS 3.1

Review impact separately from score.

Published · October 19, 2026

Updated · October 23, 2026

Description

A flaw was found in the Qt SVG module. A remote attacker could trigger this issue by providing a specially crafted SVG (Scalable Vector Graphics) file containing deeply nested elements. When parsed, this leads to uncontrolled recursion and stack exhaustion, resulting in an application crash and a Denial of Service (DoS).

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

CVSS / CWE

CVSS 3.1 · 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE-770 · Allocation of Resources Without Limits or Throttling