Critical severity9.0NVD Advisory· Published Aug 15, 2026

CVE-2026-73053

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Siyuan Note/Siyuanllm-fuzzy
Range: <v3.7.4

Patches

Vulnerability mechanics

References

github.com/siyuan-note/siyuan/security/advisories/GHSA-vx5w-qrvp-mmcqnvd
www.vulncheck.com/advisories/siyuan-before-cross-site-scripting-via-unicode2emojinvd

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