Admidio is an open-source user management solution. Prior to version 5.0.8, the inventory module's item_save endpoint accepts a user-controllable POST parameter imported that, when set to true, completely bypasses both CSRF token validation and server-side form validation. An authenticated user can craft a direct POST request to save arbitrary inventory item data without CSRF protection and without the field value checks that the FormPresenter validation normally enforces. This issue has been patched in version 5.0.8.

Affected: Packagist: admidio/admidio

## Summary

The inventory module's `item_save` endpoint accepts a user-controllable POST parameter `imported` that, when set to `true`, completely bypasses both CSRF token validation and server-side form validation. An authenticated user can craft a direct POST request to save arbitrary inventory item data without CSRF protection and without the field value checks that the `FormPresenter` validation normally enforces.

## Details

In `modules/inventory.php`, the `imported` parameter is read from POST input:

**File:** `modules/inventory.php:50` ```php $postImported = admFuncVariableIsValid($_POST, 'imported', 'bool', array('defaultValue' => false)); ```

This is then passed to `ItemService`:

**File:** `modules/inventory.php:251-256` ```php $itemService = new ItemService($gDb, $itemUuid, $postCopyField, $postCopyNumber, $postImported); $itemService->save(true); ```

Inside `ItemService::save()`, the `postImported` flag completely skips CSRF and form validation:

**File:** `src/Inventory/Service/ItemService.php:99-109` ```php public function save(bool $multiEdit = false): void { global $gCurrentSession, $gL10n, $gSettingsManager;

// check form field input and sanitized it from malicious content if (!$this->postImported) { $itemFieldsEditForm = $gCurrentSession->getFormObject($_POST['adm_csrf_token']); $formValues = $itemFieldsEditForm->validate($_POST, $multiEdit); } else { $formValues = $_POST; // Raw $_POST used with no CSRF check,…