critical9.0
CVE-2026-73053
SiYuan versions before v3.7.4 contain a cross-site scripting vulnerability in the unicode2Emoji function that fails to sanitize codepoint branch output.
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| SiYuan | before 3.7.4 |
Versions were read from the advisory text. No structured product data has been published for this record yet.