CVE-2026-40318

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.

• CWE-24

• https://github.com/siyuan-note/siyuan/releases/tag/v3.6.4Release Notes
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-vw86-c94w-v3x4Third Party Advisory

Published

Apr 16, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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