Vulnerability Description
An attacker able to supply a crafted XML document to an application using QXmlStreamReader can cause disproportionate CPU consumption during parsing, making the application unresponsive (denial of service). Exploitation requires only that the application parse attacker-influenced XML; no authentication, privileges, or user interaction beyond ingesting the input are needed. There is no loss of confidentiality or integrity — no data disclosure, data modification, or code execution — and the impact is contained to the affected process.
Related Weaknesses (CWE)
References
- https://codereview.qt-project.org/c/qt/qtbase/+/738885
- https://codereview.qt-project.org/c/qt/qtbase/+/738901
- https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-16762:
FAQ
What is CVE-2026-16762?
CVE-2026-16762 is a documented vulnerability. An attacker able to supply a crafted XML document to an application using QXmlStreamReader can cause disproportionate CPU consumption during parsing, making the application unresponsive (denial of ser...
How severe is CVE-2026-16762?
CVSS scoring is not yet available for CVE-2026-16762. Check NVD for updates.
Is there a patch for CVE-2026-16762?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.