CVE-2026-33203

Fixed in a distro release EPSS <1%CVSS 7.5

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 attacker-controlled JSON. A remote attacker can send malformed messages that trigger a runtime panic, potentially crashing the kernel process and causing denial of service. Version 3.6.2 fixes the issue.

Published 2026-03-20 · CVE record · OSV

Products: siyuan-note siyuan

Fixed upstream

Distro releases