CVE-2026-34585 in SiYuan

Sumário (Inglês)

SiYuan is a personal knowledge management system. Prior to version 3.6.2, a vulnerability allows crafted block attribute values to bypass server-side attribute escaping when an HTML entity is mixed with raw special characters. An attacker can embed a malicious IAL value inside a .sy document, package it as a .sy.zip, and have the victim import it through the normal Import -> SiYuan .sy.zip workflow. Once the note is opened, the malicious attribute breaks out of its original HTML context and injects an event handler, resulting in stored XSS. In the Electron desktop client, this XSS reaches remote code execution because injected JavaScript runs with access to Node/Electron APIs. This issue has been patched in version 3.6.2.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Responsável

GitHub_M

Reservar

30/03/2026

Divulgação

01/04/2026

Estado

Confirmado

Inscrições

VulDB provides additional information and datapoints for this CVE:

ID	Vulnerabilidade	CWE	Exp	Con	CVE
354574	SiYuan Block Script de Site Cruzado	79	Não definido	Correção oficial	CVE-2026-34585

Fontes

• MITRE
• NVD
• CVE Details