CVE-2026-41894

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.

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hjh7-r5w8-5872

https://github.com/siyuan-note/siyuan/releases/tag/v3.6.5

https://github.com/siyuan-note/siyuan/commit/bb481e1290c4a34255652ede85a546504505d2a7

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4