An information disclosure vulnerability in the Qt Framework QWebSocket authentication handling of the Qt WebSockets module has been discovered and has been assigned the CVE id CVE-2026-114366. Affected versions: from Qt 6.6.0 to Qt 6.8.9, from Qt 6.9.0 to Qt 6.11.2, Qt 6.12.0 Affected status unknown before Qt 6.6.0 Impact: Confidentiality (potential credentials leak) CVSS 4.0 Score: 2.3 (Low) Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/RE:L/U:Green Mitigation: Do not re-use the same QWebSocket instance for multiple connections. Solution: Apply the following patch or update to Qt 6.8.10, Qt 6.11.3 or Qt 6.12.1 or later. Patches: dev: https://codereview.qt-project.org/c/qt/qtwebsockets/+/772273 6.12: https://codereview.qt-project.org/c/qt/qtwebsockets/+/774227 or https://download.qt.io/official_releases/qt/6.12/CVE-2026-114366-qtwebsockets-6.12-0001.diff 6.11: https://codereview.qt-project.org/c/qt/qtwebsockets/+/776326 6.8: https://codereview.qt-project.org/c/qt/tqtc-qtwebsockets/+/776328 or https://download.qt.io/archive/qt/6.8/CVE-2026-114366-qtwebsockets-6.8-0001.diff
Joni Poikelin Qt Group Confidential
_______________________________________________ Announce mailing list [email protected] https://lists.qt-project.org/listinfo/announce
-- Development mailing list [email protected] https://lists.qt-project.org/listinfo/development
