SiYuan is an open-source personal knowledge management system.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Apr 16, 2026 · NIST NVD

   Detected

   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

2. Jun 17, 2026 · NIST NVD

   Updated

   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

Affected

• cpe b3log/siyuanversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-40318

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-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 p

  nvd.nist.gov

References

• Release Notes · github.com
• Third Party Advisory · github.com