High severity · published Apr 24, 2026
CVE-2026-41894
SiYuan: Incomplete Fix Bypass for CVE-2026-30869: Path Traversal via Double URL Encoding in `/export/` Endpoint
7.1
CVSS
0.4%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SI
siyuan · siyuan-note
< 3.6.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41894
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-41894
github.com
https://github.com/siyuan-note/siyuan/commit/bb481e1290c4a34255652ede85a546504505d2a7
github.com
https://github.com/siyuan-note/siyuan/releases/tag/v3.6.5
github.com
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hjh7-r5w8-5872
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