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CVE PROGRAM SOURCE RECORD8.1 High

CVE-2026-105634

Plane: Privilege Escalation: Project Guest Can Demote Admin/Member Roles

Description

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

makeplane plane

  • < 1.3.0affected

References