CVE-2026-73053
CRITICAL
NVD
CVSS Score
9
Severity
CRITICAL
Published
Aug 15, 2026
Vendor
unknown
Description
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.