CVE-2026-33203 SiYuan has an Unauthenticated WebSocket DoS via Auth Keepalive Bypass

SiYuan is a personal knowledge management system. Prior to version 3.6.2, the SiYuan kernel WebSocket server accepts unauthenticated connections when a specific "auth keepalive" query parameter is present. After connection, incoming messages are parsed using unchecked type assertions on...