CVE-2026-33203

HIGH

7.5

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.17.5

SeveridadeHIGH

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado3/20/2026

Ultima modificacao3/23/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

b3log:siyuan

Fraquezas (CWE)

CWE-248CWE-306

Referencias

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-3g9h-9hp4-654v(security-advisories@github.com)

Correlacoes IOC

Sem correlacoes registradas

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