UBUNTU-CVE-2025-11677

Use After Free in WebSocket server implementation in lwshandshakeserver in warmcat libwebsockets may allow an attacker, in specific configurations where the user provides a callback function that handles LWSCALLBACKHTTPCONFIRMUPGRADE, to achieve denial of service...

CVE-2025-11677

CVE-2025-11677 is a Use After Free in the warmcat libwebsockets WebSocket server (lws_handshake_server). The vulnerability triggers in configurations where a user-supplied callback handles LWS_CALLBACK_HTTP_CONFIRM_UPGRADE, potentially allowing a denial-of-service. Public advisories reference aff...