CVE-2026-73043
SiYuan before v3.7.4 Remote Code Execution via Template Calculation
- State
- Published
- Severity
- 9.4 Critical
- Published
- Aug 15, 2026
- Updated
- Aug 17, 2026
- Reserved
- Aug 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.4 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | VulnCheck |
| 3.1 | 9.0 Critical | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
siyuansiyuan-note |
|
References
- GitHub Security Advisory (GHSA-rwh7-gm74-67h6)vendor-advisory
- VulnCheck Advisory: SiYuan before v3.7.4 Remote Code Execution via Template Calculationthird-party-advisory
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