CVE-2026-40318
HIGHSiYuan: Publish Reader Path Traversal Delete via `removeUnusedAttributeView`
Title source: cnaDescription
SiYuan is an open-source personal knowledge management system. In versions 3.6.3 and prior, the /api/av/removeUnusedAttributeView endpoint constructs a filesystem path using the user-controlled id parameter without validation or path boundary enforcement. An attacker can inject path traversal sequences such as ../ into the id value to escape the intended directory and delete arbitrary .json files on the server, including global configuration files and workspace metadata. This issue has been fixed in version 3.6.4.
References (2)
Core 2
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-vw86-c94w-v3x4
X_Refsource_Misc x_refsource_misc
https://github.com/siyuan-note/siyuan/releases/tag/v3.6.4
Scores
CVSS v3
8.5
EPSS
0.0029
EPSS Percentile
20.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-24
Status
published
Products (3)
b3log/siyuan
< 3.6.4
siyuan-note/siyuan
0 - 3.6.40.0.0-20260407035653-2f416e5253f1Go
siyuan-note/siyuan
< 3.6.4
Published
Apr 16, 2026
Tracked Since
Apr 17, 2026