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CVE-2026-33731
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2026-07-16T21:17:20.317 · Last modified 2026-07-16T21:17:20.317

Summary

WWBN AVideo is an open source video platform. In versions prior to 29.0, the Authorize.Net webhook handler at plugin/AuthorizeNet/webhook.php contains a signature verification bypass that allows an attacker to forge webhook requests with arbitrary payment amounts and target user IDs. By supplying a valid transaction ID from a small legitimate purchase, the attacker bypasses signature validation and credits arbitrary wallet balances to any user account via attacker-controlled payload fields. Three flaws combine into an exploit chain: signature bypass via OR logic (webhook.php:33), payload values override API-fetched values (AuthorizeNet.php:169-171, webhook.php:44-48) and a missing approval check (webhook.php:61-75). By forging payment metadata, an attacker can credit arbitrary amounts to a

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.