WWBN AVideo up to 29.0 JSON Endpoint commentDelete.json.php forbidIfIsUntrustedRequest cross-site request forgery

Summaryinfo

A vulnerability was found in WWBN AVideo up to 29.0. It has been rated as problematic. This vulnerability affects the function forbidIfIsUntrustedRequest of the file objects/commentDelete.json.php of the component JSON Endpoint. This manipulation causes cross-site request forgery. This vulnerability appears as CVE-2026-40929. The attack may be initiated remotely. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in WWBN AVideo up to 29.0. It has been declared as problematic. Affected by this vulnerability is the function forbidIfIsUntrustedRequest of the file objects/commentDelete.json.php of the component JSON Endpoint. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. The CWE definition for the vulnerability is CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. As an impact it is known to affect integrity. The summary by CVE is:

WWBN AVideo is an open source video platform. In versions 29.0 and prior, `objects/commentDelete.json.php` is a state-mutating JSON endpoint that deletes comments but performs no CSRF validation. It does not call `forbidIfIsUntrustedRequest()`, does not verify a CSRF/global token, and does not check `Origin`/`Referer`. Because AVideo intentionally sets `session.cookie_samesite=None` (to support cross-origin embed players), a cross-site request from any attacker-controlled page automatically carries the victim's `PHPSESSID`. Any authenticated victim who has authority to delete one or more comments (site moderators, video owners, and comment authors) can be tricked into deleting comments en masse simply by visiting an attacker page. Commit 184f36b1896f3364f864f17c1acca3dd8df3af27 contains a fix.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-40929 since 04/15/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

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

Applying the patch 184f36b1896f3364f864f17c1acca3dd8df3af27 is able to eliminate this problem. The bugfix is ready for download at github.com.

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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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