CVE-2026-73053
SiYuan before v3.7.4 Cross-Site Scripting via unicode2Emoji
- State
- Published
- Severity
- 9.4 Critical
- Published
- Aug 15, 2026
- Updated
- Aug 18, 2026
- Reserved
- Aug 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.4 Critical | 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 | VulnCheck |
| 3.1 | 9.0 Critical | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
siyuansiyuan-note |
|
References
- GitHub Security Advisory (GHSA-vx5w-qrvp-mmcq)vendor-advisory
- VulnCheck Advisory: SiYuan before v3.7.4 Cross-Site Scripting via unicode2Emojithird-party-advisory
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