CVE-2026-61573 AVideo-Encoder: reflected cross-site scripting in the login interface
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-61573?
CVE-2026-61573 is a medium-severity vulnerability in WWBN AVideo-Encoder, published on 28 Oct 2026.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-61573?
How do I fix CVE-2026-61573?
No fix has been published for CVE-2026-61573 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-61573 being exploited?
There is no known exploitation of CVE-2026-61573 in the wild and no public exploit code.
Sources
Also known as GHSA-p9x3-679g-pwf5.