CVE-2026-82292: Qt Framework NULL pointer dereference in QDomDocument XML parsing

CVE-2026-82292 · Severity: info · Published 2026-11-12

Qt Framework, a widely-used cross-platform application development toolkit, contains a NULL pointer dereference vulnerability in its XML parsing component (QDomDocument). When parsing XML with invalid characters while a specific error handling policy is set, the application crashes, causing denial of service. There is no exposure of data or system compromise.

Technologies: Qt Framework. Vendors: Qt.

Quick answers

Is CVE-2026-82292 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-82292 being exploited in the wild.
How severe is CVE-2026-82292?
Informational severity, published 12 November 2026.
Which products and versions are affected?
Qt Framework 4.1.0 to 6.8.8, 6.9.0 to 6.11.2.
Is there a fix for CVE-2026-82292?
Yes: fixed in Qt 6.8.9, Qt 6.11.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-82292 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-82292?
Check whether you run Qt Framework at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: Qt 6.8.9, Qt 6.11.3

Technical details

A NULL pointer dereference occurs in QDomDocument::setContent() when parsing XML containing characters invalid under XML 1.0 with invalidDataPolicy set to QDomImplementation::ReturnNullNode. The document node factory returns a null node, which the DOM builder then dereferences without validation. An attacker who can provide malformed XML input to an application triggers the crash.

Affected products

  • Qt Qt Framework 4.1.0 to 6.8.8, 6.9.0 to 6.11.2

Timeline

  • 2026-11-12: disclosed

References

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