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 (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hjh7-r5w8-5872
X_Refsource_Misc x_refsource_misc
https://github.com/siyuan-note/siyuan/commit/bb481e1290c4a34255652ede85a546504505d2a7
X_Refsource_Misc x_refsource_misc
https://github.com/siyuan-note/siyuan/releases/tag/v3.6.5
Scores
CVSS v4
7.1
EPSS
0.0031
EPSS Percentile
22.8%
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-22
Status
published
Products (2)
siyuan-note/siyuan
0 - 3.6.5Go
siyuan-note/siyuan
< 3.6.5
Published
Apr 24, 2026
Tracked Since
Apr 24, 2026