CVE-2026-33203
SiYuan has an Unauthenticated WebSocket DoS via Auth Keepalive Bypass
Vexday Risk Score
21Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 7.5EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
20 mar 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Productos afectados
siyuan-note · siyuan¿Quieres saber si tu infraestructura está expuesta a esto?
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