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CVE-2026-23847

MEDIUM CVSS: 6.1 Published: 2026-01-19 Modified: 2026-06-17

Description

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 SVG tag without XML escaping. Since the response Content-Type is image/svg+xml, injecting unescaped tags allows breaking the XML structure and executing JavaScript. Version 3.5.4 patches the issue.]

Affected Platforms

B3Log Siyuan

Weakness Type

CWE-79

References