WWBN AVideo up to 26.0 aVideoEncoderChunk.json.php allocation of resources

Summaryinfo

A vulnerability was found in WWBN AVideo up to 26.0 and classified as problematic. The impacted element is an unknown function of the file aVideoEncoderChunk.json.php. The manipulation results in allocation of resources. This vulnerability is cataloged as CVE-2026-33483. 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, which was classified as problematic, was found in WWBN AVideo up to 26.0. Affected is an unknown code of the file aVideoEncoderChunk.json.php. The manipulation with an unknown input leads to a allocation of resources vulnerability. CWE is classifying the issue as CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. This is going to have an impact on availability. CVE summarizes:

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `aVideoEncoderChunk.json.php` endpoint is a completely standalone PHP script with no authentication, no framework includes, and no resource limits. An unauthenticated remote attacker can send arbitrary POST data which is written to persistent temp files in `/tmp/` with no size cap, no rate limiting, and no cleanup mechanism. This allows trivial disk space exhaustion leading to denial of service of the entire server. Commit 33d1bae6c731ef1682fcdc47b428313be073a5d1 contains a patch.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-33483 since 03/20/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

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

Applying the patch 33d1bae6c731ef1682fcdc47b428313be073a5d1 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/

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Once again VulDB remains the best source for vulnerability data.

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