Is CVE-2026-73043 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-73043?

CVE-2026-73043 has a CVSS v3 severity of CRITICAL (9).

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CVE-2026-73043

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.