CVE-2026-50551

SiYuan: Stored XSS to RCE via Unsanitized Attribute View Asset Cell Content

State: Published
Severity: 9.9 Critical
Published: Jun 24, 2026
Updated: Jun 25, 2026
Reserved: Jun 4, 2026

Description

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan contains a stored cross-site scripting (XSS) vulnerability in the Attribute View (database) asset cell renderer that escalates to remote code execution (RCE) in the Electron desktop client. This vulnerability is fixed in 3.7.0.

Scores

CVSS	Score	Vector	Source
3.1	9.9 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
siyuansiyuan-note	< 3.7.0Affected

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-56mp-4f3v-fgj2

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