CVE-2026-39355 Genealogy is Missing Authorization in `TeamController::transferOwnership()` Allows Any Authenticated User to Hijack Any Team (Broken Access Control)

Genealogy is a family tree PHP application. Prior to 5.9.1, a critical broken access control vulnerability in the genealogy application allows any authenticated user to transfer ownership of arbitrary non-personal teams to themselves. This enables complete takeover of other users’ team workspaces...