WWBN AVideo is an open source video platform. In versions up to and including 26.0, the RTMP `on_publish` callback at `plugin/Live/on_publish.php` is accessible without authentication. The `$_POST['name']` parameter (stream key) is interpolated directly into SQL queries in two locations — `LiveTransmitionHistory::getLatest()` and `LiveTransmition::keyExists()` — without parameterized binding or escaping. An unauthenticated attacker can exploit time-based blind SQL injection to extract all database contents including user password hashes, email addresses, and other sensitive data. Commit af59eade82de645b20183cc3d74467a7eac76549 contains a patch.

Affected: Packagist: wwbn/avideo

## Summary

The RTMP `on_publish` callback at `plugin/Live/on_publish.php` is accessible without authentication. The `$_POST['name']` parameter (stream key) is interpolated directly into SQL queries in two locations — `LiveTransmitionHistory::getLatest()` and `LiveTransmition::keyExists()` — without parameterized binding or escaping. An unauthenticated attacker can exploit time-based blind SQL injection to extract all database contents including user password hashes, email addresses, and other sensitive data.

## Details

**Entry point:** `plugin/Live/on_publish.php` — no authentication, no IP allowlist, no origin verification.

**Sanitization (insufficient):** Line 117 strips only `&` and `=` characters: ```php // plugin/Live/on_publish.php:117 $_POST['name'] = preg_replace("/[&=]/", '', $_POST['name']); ```

**Injection point #1 — unconditional (no `p` parameter needed):**

At line 120, `$_POST['name']` is passed directly to `LiveTransmitionHistory::getLatest()`: ```php // plugin/Live/on_publish.php:120 $activeLive = LiveTransmitionHistory::getLatest($_POST['name'], $live_servers_id, ...); ```

Inside `getLatest()`, the key is interpolated into a LIKE clause without escaping: ```php // plugin/Live/Objects/LiveTransmitionHistory.php:494-495 if (!empty($key)) { $sql .= " AND lth.`key` LIKE '{$key}%' "; } ```

**Injection point #2 — when `$_GET['p']` is provided:**

At line 146, `$_POST['name']` is passed to `LiveTransmition::keyExists()`: ```php // plugin/Live/on_publish…