CVE-2026-73053
CriticalCVSS 9.0Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
SiYuan versions before v3.7.4 contain a cross-site scripting vulnerability in the unicode2Emoji function that fails to sanitize codepoint branch output. Attackers can craft document icons with hex-encoded markup that executes in the renderer with Node integration enabled, achieving arbitrary code execution on the host system.
Risk Assessment
An attacker can execute arbitrary code on the user's host, potentially leading to full system compromise, data theft, or malware installation.
Recommendation
Update SiYuan to version v3.7.4 or later, which includes a fix for sanitization in the unicode2Emoji function.
Original NVD description (English source)
SiYuan versions before v3.7.4 contain a cross-site scripting vulnerability in the unicode2Emoji function that fails to sanitize codepoint branch output. Attackers can craft document icons with hex-encoded markup that executes in the renderer with Node integration enabled, achieving arbitrary code execution on the host system.