Security Advisory

CVE-2026-41894

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-04-24 18:56:54

Last updated 2026-04-27 13:43:17

Assigner GitHub_M

CVSS score 7.1

State PUBLISHED

Description

SiYuan is an open-source personal knowledge management system. Prior to 3.6.5, the fix for CVE-2026-30869 only added a denylist check (IsSensitivePath) but did not address the root cause — a redundant url.PathUnescape() call in serveExport(). An authenticated attacker can use double URL encoding (%252e%252e) to traverse directories and read arbitrary workspace files including the full SQLite database (siyuan.db), kernel log, and all user documents. This vulnerability is fixed in 3.6.5.

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