High · published July 20, 2026
dataCycle is a data management system for centrally storing, managing, searching, finding, and distributing data. In dataCycle-CORE, the module handling core processing and framework rules, before and including version 25.07.3, the application accepts unlimited password guesses against both the browser login flow and the JSON login endpoint. The source code enables Devise's `:lockable` module on the user model but explicitly disables both lock and unlock strategies, and no request throttling or rate-limiting layer was identified in the Rails code. This creates a direct online password-guessing risk:
- valid user accounts can be attacked continuously without temporary lockout
- the same weakness is reachable through both `/users/sign_in` and `/api/v4/auth/login`
- successful guessing yields a normal session cookie in the HTML flow or a fresh JWT in the API flow
- the API endpoint is especially attractive for automation because it requires no CSRF token
This has been patched in version 26.06.08.