Quick answers
- Is CVE-2026-97845 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-97845 being exploited in the wild.
- How severe is CVE-2026-97845?
- Informational severity, published 12 November 2026.
- Which products and versions are affected?
- Qt 5 Qt XML module; Qt 6 Qt 5 Core Compatibility APIs module.
- Is there a fix for CVE-2026-97845?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-97845 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-97845?
- Check whether you run Qt 5 or Qt 6 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.
Technical details
An uncontrolled recursion vulnerability exists in the QXmlSimpleReader class within Qt's XML parsing functionality. The flaw can be triggered by providing deeply nested or recursively constructed XML documents, leading to stack exhaustion. Applications that parse untrusted XML input using the affected Qt XML modules are vulnerable to denial of service through resource exhaustion.
Affected products
- Qt Qt 5 Qt XML module
- Qt Qt 6 Qt 5 Core Compatibility APIs module
Timeline
- 2026-11-12: disclosed