WWBN AVideo up to 29.0 Rejection Message cloneClient.json.php die objClone information exposure

Summaryinfo

A vulnerability classified as problematic has been found in WWBN AVideo up to 29.0. This vulnerability affects the function die of the file plugin/CloneSite/cloneClient.json.php of the component Rejection Message Handler. This manipulation of the argument objClone causes information exposure. This vulnerability appears as CVE-2026-43873. The attack may be initiated remotely. There is no available exploit. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability has been found in WWBN AVideo up to 29.0 and classified as problematic. Affected by this vulnerability is the function die of the file plugin/CloneSite/cloneClient.json.php of the component Rejection Message Handler. The manipulation of the argument objClone with an unknown input leads to a information exposure vulnerability. The CWE definition for the vulnerability is CWE-209. The product generates an error message that includes sensitive information about its environment, users, or associated data. As an impact it is known to affect confidentiality. The summary by CVE is:

WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/CloneSite/cloneClient.json.php echoes the local CloneSite shared secret ($objClone->myKey, a constant md5($global['systemRootPath'] . $global['salt'])) into the HTTP response body on every unauthenticated request. The unauthenticated error branch was intended to reject non-admin callers without a valid key, but the rejection message interpolates the expected key before die(). When the victim has CloneSite configured with a remote cloneSiteURL (standard federation/backup setup), the leaked myKey is exactly the credential that authenticates the victim to that remote server's cloneServer.json.php, allowing the attacker to impersonate the victim and trigger a full mysqldump of the remote's database to the remote's public videos/clones/ directory Commit e6566f56a28f4556b2a0a09d03717a719dcb49da contains an updated fix.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-43873 since 05/04/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

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

Applying the patch e6566f56a28f4556b2a0a09d03717a719dcb49da is able to eliminate this problem. The bugfix is ready for download at github.com.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• WWBN

Name

• AVideo

Version

• 29.0

License

• open-source

Website

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

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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