Skip to content
CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-16762

Denial-of-service vulnerability in the Qt Core QXmlStream parser (QXmlStreamReader) impacts Qt

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

qt qt

Default version status: unaffected

  • 0 to < 4.3.0unknown
  • 4.3.0 to < 6.8.9affected
  • 6.9.0 to < 6.11.2affected

References