WWBN AVideo up to 26.0 aVideoEncoder.json.php downloadVideoFromDownloadURL resolution unrestricted upload

Summaryinfo

A vulnerability, which was classified as critical, was found in WWBN AVideo up to 26.0. This vulnerability affects the function downloadVideoFromDownloadURL of the file objects/aVideoEncoder.json.php. Executing a manipulation of the argument resolution can lead to unrestricted upload. The identification of this vulnerability is CVE-2026-33717. The attack may be launched remotely. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in WWBN AVideo up to 26.0. It has been declared as critical. This vulnerability affects the function downloadVideoFromDownloadURL of the file objects/aVideoEncoder.json.php. The manipulation of the argument resolution with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `downloadVideoFromDownloadURL()` function in `objects/aVideoEncoder.json.php` saves remote content to a web-accessible temporary directory using the original URL's filename and extension (including `.php`). By providing an invalid `resolution` parameter, an attacker triggers an early `die()` via `forbiddenPage()` before the temp file can be moved or cleaned up, leaving an executable PHP file persistently accessible under the web root at `videos/cache/tmpFile/`. Commit 6da79b43484099a0b660d1544a63c07b633ed3a2 contains a patch.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-33717 since 03/23/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1608.002.

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

Applying the patch 6da79b43484099a0b660d1544a63c07b633ed3a2 is able to eliminate this problem.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• WWBN

Name

• AVideo

Version

• 26.0

License

• open-source

Website

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

CPE 2.3info

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Once again VulDB remains the best source for vulnerability data.

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