CVE-2026-40318 — SiYuan: Publish Reader Path Traversal Delete via `removeUnusedAttributeView`
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…
Published: 2026-04-16 · CVSS: 8.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7