high8.1
CVE-2026-105634
Plane is an open-source project management tool.
Impact
Plane is an open-source project management tool. Prior to 1.3.0, the ProjectMemberViewSet.partial_update method allows any project member, including a user with the lowest GUEST role, to modify another project member's role. The authorization check prevents assigning a role higher than the requester's role but does not prevent assigning a lower or equal role, allowing a Guest to demote Administrators and Members and deny them project control. This vulnerability is fixed in 1.3.0.
Affected products
| Product | Affected versions |
|---|---|
| Plane Is An Open-Source Project Management Tool. | before 1.3.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.