SEPTEMBER 17, 2026
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Case File

CVE-2026-73053

CRITICAL · CVSS 9 EPSS 0.28% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-15 · Last synced 2026-09-14

CyberRota Analysis

AI-Generated

Versions of SiYuan prior to 3.7.4 are vulnerable to a critical cross-site scripting flaw in the unicode2Emoji function, which does not adequately sanitize output. This vulnerability allows attackers to create malicious document icons that can execute arbitrary code on the host system when Node integration is enabled. Organizations using affected versions should prioritize patching to mitigate the risk of exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
arbitrary code execution code execution
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-73053
Severity
CRITICAL
CVSS
9
EPSS
0.28%

Original NVD 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.