CVE-2026-78253

qt: Qt: Denial of Service via uncontrolled recursion in XML processing

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Severity

Moderate

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · September 23, 2026

Updated · September 24, 2026

Description

A flaw was found in Qt. An attacker can exploit uncontrolled recursion in the QXmlStreamReader::readElementText() function by providing a specially crafted XML document. This can lead to a denial of service (DoS), causing the application to crash due to stack exhaustion.

Statement

Red Hat Enterprise Linux 7, 8 and 9 are not affected by this vulnerability.

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

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.7
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE-776 · Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')