phpMyFAQ before 4.1.2 contains missing permission checks in ConfigurationTabController.php where 12 endpoints use userIsAuthenticated() instead of userHasPermission(CONFIGURATION_EDIT). Any authenticated user can enumerate system configuration metadata including permission model, cache backend, mail provider, and translation provider by querying /admin/api/configuration endpoints, violating least privilege access control.

Affected: Packagist: thorsten/phpmyfaq, Packagist: phpmyfaq/phpmyfaq

## Summary

12 endpoints in `ConfigurationTabController.php` use `userIsAuthenticated()` (login-only check) instead of `userHasPermission(PermissionType::CONFIGURATION_EDIT)`. This allows any authenticated user — including ones with zero admin permissions — to enumerate system configuration metadata including the permission model, active template, cache backend, mail provider, and translation provider.

## Details

The `ConfigurationTabController` contains 15 public endpoints. Three of them (`list`, `save`, `uploadTheme`) correctly enforce `CONFIGURATION_EDIT` permission:

```php // phpmyfaq/src/phpMyFAQ/Controller/Administration/Api/ConfigurationTabController.php:63 public function list(Request $request): Response { $this->userHasPermission(PermissionType::CONFIGURATION_EDIT); // ✅ Correct // ... } ```

The remaining 12 only check that the user is logged in:

```php // phpmyfaq/src/phpMyFAQ/Controller/Administration/Api/ConfigurationTabController.php:353 public function translations(): Response { $this->userIsAuthenticated(); // ❌ Missing permission check // ... } ```

The difference between these two methods is significant:

```php // AbstractController.php:258 — login-only protected function userIsAuthenticated(): void { if (!$this->currentUser->isLoggedIn()) { throw new UnauthorizedHttpException(challenge: 'User is not authenticated.'); } }

// AbstractController.php:317 — login + permission check protected function userHasPermission(Permi…