CVE-2026-11573

Uncontrolled recursion in QDomDocument/QDomNode serialization causes stack exhaustion (QtXml)

HIGH

7.1

CVSS Score

Published: September 8, 2026 at 12:06 PM UTC

Updated: September 11, 2026 at 10:16 AM UTC

1 product affected across 1 vendorQt

Using qt by qt?

Get instant alerts when new vulnerabilities affect qt - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH7.1

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

Uncontrolled recursion in Qt's QDomDocument serialization (QtXml) lets deeply nested untrusted XML crash the app via stack exhaustion (DoS only).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Qt · Qt

95%

2.2.0 ≤ v < 6.8.22.2.0

Affected range stops below 6.8.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://codereview.qt-project.org/c/qt/qtbase/+/606899

References (1)

Patch

Source: cverecord

https://codereview.qt-project.org/c/qt/qtbase/+/606899

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHQt

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-674

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card