CVE-2026-73053

CVSS 9.4 (critical) · published 2026-08-15

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.

Weakness: CWE-79

Source: NVD CVE-2026-73053

References

• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-vx5w-qrvp-mmcq
• https://www.vulncheck.com/advisories/siyuan-before-cross-site-scripting-via-unicode2emoji
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-vx5w-qrvp-mmcq

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