EUVD-2026-292387

fkie_cve-2026-41061

WWBN AVideo is an open source video platform. In versions 29.0 and below, the `isValidDuration()` regex at `objects/video.php:918` uses `/^[0-9]{1,2}:[0-9]{1,2}:[0-9]{1,2}/` without a `$` end anchor, allowing arbitrary HTML/JavaScript to be appended after a valid duration prefix. The crafted duration is stored in the database and rendered without HTML escaping via `echo Video::getCleanDuration()` on trending pages, playlist pages, and video gallery thumbnails, resulting in stored cross-site scripting. Commit bcba324644df8b4ed1f891462455f1cd26822a45 contains a fix.

GHSA-8pv3-29pp-pf8f — WWBN AVideo has Stored XSS via Unanchored Duration Regex in Video Encoder Receiver

Affected: Packagist: wwbn/avideo

## Summary

The `isValidDuration()` regex at `objects/video.php:918` uses `/^[0-9]{1,2}:[0-9]{1,2}:[0-9]{1,2}/` without a `$` end anchor, allowing arbitrary HTML/JavaScript to be appended after a valid duration prefix. The crafted duration is stored in the database and rendered without HTML escaping via `echo Video::getCleanDuration()` on trending pages, playlist pages, and video gallery thumbnails, resulting in stored cross-site scripting.

## Details

**Input entry point:** `objects/aVideoEncoderReceiveImage.json.php:208`

```php // Line 203-211 if (!empty($_REQUEST['duration'])) { $video->setDuration($_REQUEST['duration']); } ```

**Insufficient validation:** `objects/video.php:918`

```php static function isValidDuration($duration) { // ... return preg_match('/^[0-9]{1,2}:[0-9]{1,2}:[0-9]{1,2}/', $duration); // Missing $ anchor here -----------------------------------^ } ```

The regex matches `00:00:01` at the start of the string but ignores everything after it. A payload like `00:00:01</time><img src=x onerror=alert(1)><time>` passes validation.

**No sanitization in output function:** `objects/video.php:3463-3480`

```php public static function getCleanDuration($duration = "") { $durationParts = explode(".", $duration); $duration = $durationParts[0]; $durationParts = explode(':', $duration); if (count($durationParts) == 1) { return '0:00:' . static::addZero($durationParts[0]); } elseif (count($durationParts) == 2) {…

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EUVD-2026-292387

fkie_cve-2026-41061

GHSA-8pv3-29pp-pf8f — WWBN AVideo has Stored XSS via Unanchored Duration Regex in Video Encoder Receiver