CVE-2026-73043

CRITICAL 9.0

SiYuan before v3.7.4 Remote Code Execution via Template Calculation

CVSS Score

9.0

EPSS Score

0.0%

EPSS Percentile

0th

SiYuan versions before v3.7.4 contain a remote code execution vulnerability in the Template calculation operator, which renders user-authored Go templates and stores output verbatim without sanitization. Attackers can inject malicious HTML and JavaScript into template calculations that execute in the desktop client renderer with Node integration enabled, allowing arbitrary code execution when the database is opened.

CWE	CWE-79
Vendor	siyuan-note
Product	siyuan
Published	Aug 15, 2026

Stay Ahead of the Next One

Get instant alerts for siyuan-note siyuan

Be the first to know when new critical vulnerabilities affecting siyuan-note siyuan are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

siyuan-note / siyuan

0 < 3.7.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/siyuan-note/siyuan/security/advisories/GHSA-rwh7-gm74-67h6 vulncheck.com: https://www.vulncheck.com/advisories/siyuan-before-remote-code-execution-via-template-calculation

Credits

🔍 Shirshakhtml