CVE-2026-41894 | THREATINT

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.

PUBLISHED Reserved 2026-04-22 | Published 2026-04-24 | Updated 2026-04-24 | Assigner GitHub_M

HIGH: 7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

< 3.6.5

affected

References

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

github.com/...ommit/bb481e1290c4a34255652ede85a546504505d2a7

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

cve.org (CVE-2026-41894)

nvd.nist.gov (CVE-2026-41894)

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