Plane is an open-source project management tool. In 1.3.1 and earlier, ProjectMemberViewSet.partial_update places its authorization checks inside the role update branch, so a guest or member can omit role and change another ProjectMember record's is_active field, including deactivating a project administrator. ProjectMemberPreferenceEndpoint.patch separately trusts the member_id path value and lets a project member overwrite another member's preferences. These missing object-level authorization checks permit membership disruption and cross-member preference tampering.
The vulnerability is fixed in 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
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/makeplane/plane/commit/dc9d80b2d2a499b967f0b541e083b283f4637…
security-advisories@github.com
https://github.com/makeplane/plane/pull/9367
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-25gg-cxm8-g7h9
security-advisories@github.com