SiYuan: Publish Reader Path Traversal Delete via `removeUnusedAttributeView`_CVE-2026-40318

8.5 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H

Description

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.

AI Analysis

Path traversal vulnerability in SiYuan's /api/av/removeUnusedAttributeView endpoint, allowing deletion of arbitrary .json files on the server.

Basic Information

ID CVE-2026-40318

Source GitHub_M

Published Apr 16, 2026 at 22:54

Affected Product

Vendor siyuan-note

Product siyuan

Version < 3.6.4

Affected Versions siyuan-note siyuan < 3.6.4

CWE Classification

CWE-24

AI Assessment

AI Score 8.5 / 10

AI Severity High

Vendor siyuan-note

Product SiYuan

Version 3.6.3 and prior

References

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    "published": "2026-04-16T22:54:47.881Z",
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