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Critical · 9.0 CVE-2026-73053 EUVD-2026-59802GHSA-qh5w-p4pr-mhpj

SiYuan before v3.7.4 Cross-Site Scripting via unicode2Emoji

Published Aug 15, 2026 · Updated Aug 18, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
siyuan-note siyuan < 3.7.4 3.7.4

References