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

Source: https://junglewise.ai/threats/cve-2026-82292-a-null-pointer-dereference-vulnerability-in-the-qt-framework  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-12. Updated: 2026-11-12  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/technologies/qt-qt-framework). Vendors: [Qt](https://junglewise.ai/threats/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

- [https://codereview.qt-project.org/c/qt/qtbase/+/757771](https://codereview.qt-project.org/c/qt/qtbase/+/757771)
- [https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products](https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products)

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