CVE-2026-105634 — Plane: Privilege Escalation: Project Guest Can Demote Admin/Member Roles
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…
Published: 2026-10-05 · CVSS: 8.1 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7