This advisory has been withdrawn because it is a duplicate of GHSA-mw8r-mw84-88v2. This link is maintained to preserve external references.

SiYuan versions before v3.7.4 contain a publish-boundary bypass vulnerability in WebSocket broadcast sessions that allows anonymous readers to receive unfiltered edits. Attackers can establish a WebSocket connection to the publish surface and passively receive real-time content events including password-protected and forbidden documents without authentication.