WWBN AVideo up to 29.0 LoginControl verifyChallenge.json.php improper authentication

Summaryinfo

A vulnerability, which was classified as critical, was found in WWBN AVideo up to 29.0. This issue affects some unknown processing of the file verifyChallenge.json.php of the component LoginControl. Executing a manipulation can lead to improper authentication. This vulnerability is handled as CVE-2026-92914. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in WWBN AVideo up to 29.0. It has been declared as critical. This vulnerability affects some unknown functionality of the file verifyChallenge.json.php of the component LoginControl. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

AVideo LoginControl contains an authentication bypass vulnerability in the PGP second factor verification that compares challenge responses using loose equality against an uninitialized session variable. Attackers with a victim's password can bypass the second factor by sending a parameter-less GET request to verifyChallenge.json.php, which evaluates null == null and marks authentication complete.

The advisory is available at github.com. This vulnerability was named CVE-2026-92914 since 09/17/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/17/2026).

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

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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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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