CVE-2026-114369 PUBLISHED

Security Issue CVE-2026-114369 - Resource exhaustion (denial of service) vulnerability in the WebSocket handshake handling of QWebSocket and QWebSocketServer impacts Qt Framework

Assigner: Qt
Reserved: 21.10.2026 Published: 12.11.2026 Updated: 12.11.2026

Resource exhaustion vulnerability in the Qt Framework QWebSocket and QWebSocketServer classes of the Qt WebSockets module

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/R:A/RE:L/U:Clear
CVSS Score: 2.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Vendor	qt
Product	Qt Framework
Versions	Default: unaffected unknown from 0 to 5.15.0 (excl.) affected from 5.15.0 to 6.8.9 (incl.) affected from 6.9.0 to 6.12.0 (incl.)