Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS via the getDynamicIcon endpoint when attacker-controlled input is embedded into SVG output without proper sanitization. An attacker can execute arbitrary JavaScript in the context of the web application by...

SiYuan: Unauthenticated Reflected XSS via SVG Injection in /api/icon/getDynamicIcon Endpoint

Summary An unauthenticated reflected XSS vulnerability exists in the dynamic icon API endpoint: - GET /api/icon/getDynamicIcon When type=8, attacker-controlled content is embedded into SVG output without escaping. Because the endpoint is unauthenticated and returns image/svg+xml, a crafted URL ca...

CVE-2026-23847

SiYuan is a personal knowledge management system. Versions prior to 3.5.4 are vulnerable to reflected cross-site scripting in /api/icon/getDynamicIcon due to unsanitized SVG input. The endpoint generates SVG images for text icons type=8. The content query parameter is inserted directly into the S...

SiYuan cross-site scripting vulnerabilities

SiYuan is a privacy-oriented personal knowledge management system developed by SiYuan itself. Versions of SiYuan prior to 3.5.4 contained a cross-site scripting vulnerability. This vulnerability stemmed from the /api/icon/getDynamicIcon endpoint’s improper handling of uncleaned SVG inputs, which...

PT-2026-3492

Name of the Vulnerable Software and Affected Versions SiYuan versions prior to 3.5.4 Description SiYuan is a personal knowledge management system susceptible to reflected cross-site scripting. The issue occurs in the /api/icon/getDynamicIcon API endpoint. The endpoint generates SVG images for tex...