WWBN AVideo up to 29.0 API Endpoint objects/functions.php allowAll cross-domain policy

Summaryinfo

A vulnerability, which was classified as critical, was found in WWBN AVideo up to 29.0. This impacts an unknown function of the file objects/functions.php of the component API Endpoint. Such manipulation of the argument allowAll leads to cross-domain policy. This vulnerability is listed as CVE-2026-41056. The attack may be performed from remote. There is no available exploit. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in WWBN AVideo up to 29.0. Affected by this issue is some unknown functionality of the file objects/functions.php of the component API Endpoint. The manipulation of the argument allowAll with an unknown input leads to a cross-domain policy vulnerability. Using CWE to declare the problem leads to CWE-942. The product uses a cross-domain policy file that includes domains that should not be trusted. Impacted is confidentiality, integrity, and availability. CVE summarizes:

WWBN AVideo is an open source video platform. In versions 29.0 and below, the `allowOrigin($allowAll=true)` function in `objects/functions.php` reflects any arbitrary `Origin` header back in `Access-Control-Allow-Origin` along with `Access-Control-Allow-Credentials: true`. This function is called by both `plugin/API/get.json.php` and `plugin/API/set.json.php` — the primary API endpoints that handle user data retrieval, authentication, livestream credentials, and state-changing operations. Combined with the application's `SameSite=None` session cookie policy, any website can make credentialed cross-origin requests and read authenticated API responses, enabling theft of user PII, livestream keys, and performing state changes on behalf of the victim. Commit caf705f38eae0ccfac4c3af1587781355d24495e contains a fix.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-41056 since 04/16/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

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

Applying the patch caf705f38eae0ccfac4c3af1587781355d24495e is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Vendor

• WWBN

Name

• AVideo

Version

• 29.0

License

• open-source

Website

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

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