Vulnerabilities CVE-2026-73053

CVE-2026-73053

Critical

Open

TLP:CLEAR

SiYuan before v3.7.4 Cross-Site Scripting via unicode2Emoji

NVD CVE.org

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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.

Details

CVSS Score: 9.4
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Confidence: 90%
Published: Aug 15, 2026
Last Modified: Aug 15, 2026

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