Security Advisory

CVE-2026-23847

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-01-19 19:46:08

Last updated 2026-01-20 14:37:42

Assigner GitHub_M

CVSS score 2.1

State PUBLISHED

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 <text> 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.]

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