WWBN AVideo up to 25.x Header proxy.php isSSRFSafeURL server-side request forgery

Summaryinfo

A vulnerability categorized as critical has been discovered in WWBN AVideo up to 25.x. Affected by this issue is the function isSSRFSafeURL of the file plugin/LiveLinks/proxy.php of the component Header Handler. Executing a manipulation can lead to server-side request forgery. The identification of this vulnerability is CVE-2026-33039. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in WWBN AVideo up to 25.x and classified as critical. This vulnerability affects the function isSSRFSafeURL of the file plugin/LiveLinks/proxy.php of the component Header Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

WWBN AVideo is an open source video platform. In versions 25.0 and below, the plugin/LiveLinks/proxy.php endpoint validates user-supplied URLs against internal/private networks using isSSRFSafeURL(), but only checks the initial URL. When the initial URL responds with an HTTP redirect (Location header), the redirect target is fetched via fakeBrowser() without re-validation, allowing an attacker to reach internal services (cloud metadata, RFC1918 addresses) through an attacker-controlled redirect. This issue is fixed in version 26.0.

The advisory is available at github.com. This vulnerability was named CVE-2026-33039 since 03/17/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

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

Upgrading to version 26.0 eliminates this vulnerability.

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Productinfo

Vendor

• WWBN

Name

• AVideo

Version

• 25.x

License

• open-source

Website

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

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