WWBN AVideo up to 21.x API Endpoint aVideoEncoder.json.php downloadURL server-side request forgery

Summaryinfo

A vulnerability was found in WWBN AVideo up to 21.x and classified as critical. The impacted element is an unknown function of the file aVideoEncoder.json.php of the component API Endpoint. Executing a manipulation of the argument downloadURL can lead to server-side request forgery. This vulnerability is handled as CVE-2026-27732. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in WWBN AVideo up to 21.x. It has been declared as critical. This vulnerability affects an unknown code of the file aVideoEncoder.json.php of the component API Endpoint. The manipulation of the argument downloadURL 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. Prior to version 22.0, the `aVideoEncoder.json.php` API endpoint accepts a `downloadURL` parameter and fetches the referenced resource server-side without proper validation or an allow-list. This allows authenticated users to trigger server-side requests to arbitrary URLs (including internal network endpoints). An authenticated attacker can leverage SSRF to interact with internal services and retrieve sensitive data (e.g., internal APIs, metadata services), potentially leading to further compromise depending on the deployment environment. This issue has been fixed in AVideo version 22.0.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-27732 since 02/23/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available.

By approaching the search of inurl:aVideoEncoder.json.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 22.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 384ef2548093f4cbb1bfac00f1f429fe57fab853 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• WWBN

Name

• AVideo

Version

• 21.x

License

• open-source

Website

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

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion