Vulnerability Database

309,364

Total vulnerabilities in the database

CVE-2025-5991

There is a "Use After Free" vulnerability in Qt's QHttp2ProtocolHandler in the QtNetwork module. This only affects HTTP/2 handling, HTTP handling is not affected by this at all. This happens due to a race condition between how QHttp2Stream uploads the body of a POST request and the simultaneous handling of HTTP error responses.

This issue only affects Qt 6.9.0 and has been fixed for Qt 6.9.1.

  • Published: Jun 11, 2025
  • Updated: Nov 16, 2025
  • CVE: CVE-2025-5991
  • Exploit:

No technical information available.

CWEs:

No affected software listed.