Plane is an open-source project management tool. In 1.3.1 and earlier, EntityAssetEndpoint at the public project asset endpoint /api/public/assets/v2/anchor/{anchor}/ requires authentication for write operations but does not verify workspace or project membership. An authenticated user who knows a published project's public DeployBoard.anchor can create FileAsset records in that project and soft-delete existing assets by identifier, allowing cross-workspace file injection, storage abuse, and data loss.
The issue is fixed in version 1.4.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/makeplane/plane/commit/4577dc3f7a6b5a198602b602a45c6b0abdc72…
security-advisories@github.com
https://github.com/makeplane/plane/pull/9288
security-advisories@github.com
https://github.com/makeplane/plane/releases/tag/v1.4.0
security-advisories@github.com
https://github.com/makeplane/plane/security/advisories/GHSA-8688-h9x2-v83m
security-advisories@github.com