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EUVD-2026-292307

2026-10-08T00:12:30.322251+00:00

EUVD-2026-292307

fkie_cve-2026-40925

2026-10-08T00:12:30.322283+00:00

WWBN AVideo is an open source video platform. In versions 29.0 and prior, `objects/configurationUpdate.json.php` (also routed via `/updateConfig`) persists dozens of global site settings from `$_POST` but protects the endpoint only with `User::isAdmin()`. It does not call `forbidIfIsUntrustedRequest()`, does not verify a `globalToken`, and does not validate the Origin/Referer header. Because AVideo intentionally sets `session.cookie_samesite=None` to support cross-origin iframe embedding, a logged-in administrator who visits an attacker-controlled page will have the browser auto-submit a cross-origin POST that rewrites the site's encoder URL, SMTP credentials, site `` HTML, logo, favicon, contact email, and more in a single request. Commit f9492f5e6123dff0292d5bb3164fde7665dc36b4 contains a fix.

GHSA-vvfw-4m39-fjqf — WWBN AVideo has CSRF in configurationUpdate.json.php Enables Full Site Configuration Takeover Including Encoder URL and…

2026-10-08T00:12:30.322319+00:00

Affected: Packagist: wwbn/avideo

## Summary

`objects/configurationUpdate.json.php` (also routed via `/updateConfig`) persists dozens of global site settings from `$_POST` but protects the endpoint only with `User::isAdmin()`. It does not call `forbidIfIsUntrustedRequest()`, does not verify a `globalToken`, and does not validate the Origin/Referer header. Because AVideo intentionally sets `session.cookie_samesite=None` to support cross-origin iframe embedding, a logged-in administrator who visits an attacker-controlled page will have the browser auto-submit a cross-origin POST that rewrites the site's encoder URL, SMTP credentials, site `` HTML, logo, favicon, contact email, and more in a single request.

## Details

The entire authorization and CSRF check for the endpoint is this block at `objects/configurationUpdate.json.php:10`:

```php require_once $global['systemRootPath'] . 'objects/user.php'; if (!User::isAdmin()) { die('{"error":"' . __("Permission denied") . '"}'); } ```

Immediately after, `$_POST` values are written straight into the global `AVideoConf` object and persisted:

```php // objects/configurationUpdate.json.php $config = new AVideoConf(); $config->setContactEmail($_POST['contactEmail']); // :21 $config->setLanguage($_POST['language']); // :22 $config->setWebSiteTitle($_POST['webSiteTitle']); // :23 $config->setDescription($_POST['description']); // :24 $config->setAuthCanComment($_POST['authCanComment']); // :25 $config->setAut…