Vulnerability Description
WWBN AVideo is an open source video platform. In versions 26.0 and prior, the PayPal IPN v1 handler at plugin/PayPalYPT/ipn.php lacks transaction deduplication, allowing an attacker to replay a single legitimate IPN notification to repeatedly inflate their wallet balance and renew subscriptions. The newer ipnV2.php and webhook.php handlers correctly deduplicate via PayPalYPT_log entries, but the v1 handler was never updated and remains actively referenced as the notify_url for billing plans.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wwbn | Avideo | <= 26.0 |
Related Weaknesses (CWE)
References
- https://github.com/WWBN/AVideo/commit/8f53e9d9c6aaa07d51ace30691981edbbfb5ca1cPatch
- https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9pThird Party Advisory
- https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9pThird Party Advisory
FAQ
What is CVE-2026-39366?
CVE-2026-39366 is a vulnerability with a CVSS score of 6.5 (MEDIUM). WWBN AVideo is an open source video platform. In versions 26.0 and prior, the PayPal IPN v1 handler at plugin/PayPalYPT/ipn.php lacks transaction deduplication, allowing an attacker to replay a single...
How severe is CVE-2026-39366?
CVE-2026-39366 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-39366?
Check the references section above for vendor advisories and patch information. Affected products include: Wwbn Avideo.