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CVE PROGRAM SOURCE RECORD2.1 Low

CVE-2025-5991

Use after free in QHttp2ProtocolHandler

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
TQtC

Description

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.

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 < 6.9.0unaffected
  • 6.9.0affected
  • 6.9.1unaffected

References