WWBN AVideo-Encoder up to 8.0.x Anonymous Login Interface objects/Streamer.php Streamer::getStreamerURL webSiteRootURL cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, was found in WWBN AVideo-Encoder up to 8.0.x. The impacted element is the function Streamer::getStreamerURL of the file objects/Streamer.php of the component Anonymous Login Interface. Executing a manipulation of the argument webSiteRootURL can lead to cross site scripting. This vulnerability appears as CVE-2026-61573. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in WWBN AVideo-Encoder up to 8.0.x. This vulnerability affects the function Streamer::getStreamerURL of the file objects/Streamer.php of the component Anonymous Login Interface. The manipulation of the argument webSiteRootURL with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

AVideo is a video-sharing Platform. Prior to 8.1.0, the anonymous login interface reflects request values into HTML and JavaScript without output encoding. In `view/index.php`, `webSiteRootURL` is returned verbatim by `Streamer::getStreamerURL()` in `objects/Streamer.php` and reaches navigation and form attributes; it also enters a single-quoted JavaScript string in `view/index.header.php`. It is not filtered by `objects/security.php`, while the `user` and `pass` fields are filtered only for single quotes, leaving double quotes and angle brackets capable of breaking out of their HTML attributes. In addition, `view/index.header.php` reflects POST fields using `json_encode` without `JSON_HEX_TAG`, allowing a closing script tag to break out, and `locale/function.php` stores the POST `lang` value in the session for unescaped reflection in `view/index.php`. An unauthenticated remote attacker who persuades a victim to open a crafted login link can execute arbitrary JavaScript in the encoder's origin. This can read the operator session identifier exposed in inline script, capture login credentials and perform actions as the operator against the encoder and its upstream platform. This issue is fixed in version 8.1.0.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-61573 since 07/10/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

By approaching the search of inurl:objects/Streamer.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 8.1.0 eliminates this vulnerability.

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Productinfo

Vendor

• WWBN

Name

• AVideo-Encoder

Version

• 8.0

Website

• Product: https://github.com/WWBN/AVideo-Encoder/

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