CVEvulnerability
CVE-2026-16762
8.7 HIGH
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-10-23
- Last modified
- 2026-10-23
- Assigner
- a59d8014-47c4-4630-ab43-e1b13cbe58e3
- CVSS 4.0 (a59d8014-47c4-4630-ab43-e1b13cbe58e3)
- 8.7 HIGH — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:A/V:X/RE:L/U:X
- Weaknesses
- CWE-407
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
Weakness · CWE (1)
- CWE-407 Inefficient Algorithmic Complexity weakness
References
- https://codereview.qt-project.org/c/qt/qtbase/+/738885 codereview.qt-project.org
- https://codereview.qt-project.org/c/qt/qtbase/+/738901 codereview.qt-project.org
- https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-16762: wiki.qt.io