CVE-2026-104955 Plane: Project Member can escalate Project Guest to Member via PATCH /project-members/{pk} (BAC / Privilege Escalation)

Plane is an open-source project management tool. Prior to 1.4.0, a Project Member with role 15 can send a PATCH request to the project-member update endpoint at /api/workspaces/workspaceslug/projects/projectid/members/memberpk/ to change another user's project role. The role-update logic blocks...