CVE-2026-73043

critical · 9.4

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.

9.4

CVSS

0.6%

EPSS (exploit prob.)

49th

EPSS percentile

2026-08-15

Published

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-79

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-73043