WWBN AVideo up to 29.0 URL plugin/Meet/iframe.php cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, was found in WWBN AVideo up to 29.0. The affected element is an unknown function of the file plugin/Meet/iframe.php of the component URL Handler. Executing a manipulation can lead to cross site scripting. This vulnerability is handled as CVE-2026-43878. The attack can be executed remotely. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in WWBN AVideo up to 29.0. It has been declared as problematic. This vulnerability affects some unknown functionality of the file plugin/Meet/iframe.php of the component URL Handler. The manipulation 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:

WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/Meet/iframe.php echoes the attacker-controlled user and pass query parameters unescaped into a JavaScript double-quoted string literal inside a block. An attacker who sends a victim to a crafted URL can break out of the string and execute arbitrary JavaScript in the victim's browser in the context of the AVideo origin. No authentication is required if a public Meet schedule exists on the target. Commit 3298ced2bcf92e4f3acff6ce9bde14edf42ecb5b contains an updated fix.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-43878 since 05/04/2026. 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:plugin/Meet/iframe.php it is possible to find vulnerable targets with Google Hacking.

Applying the patch 3298ced2bcf92e4f3acff6ce9bde14edf42ecb5b is able to eliminate this problem. The bugfix is ready for download at github.com.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• WWBN

Name

• AVideo

Version

• 29.0

License

• open-source

Website

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

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