CVE-2026-39366 Details
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.
A vulnerability exists in WWBN AVideo versions through 26.0 within the PayPal IPN v1 handler located at plugin/PayPalYPT/ipn.php. The issue arises because the handler lacks transaction deduplication, enabling an attacker to replay a legitimate IPN notification multiple times. This exploitation can lead to unauthorized inflation of the attacker's wallet balance and repeated renewals of subscriptions. While the newer ipnV2.php and webhook.php handlers have addressed this issue by implementing deduplication through PayPalYPT_log entries, the v1 handler remains outdated and is still actively used as the notify_url for billing plans.
Users are advised to update to AVideo version 29.0 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 8, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9p | CISA-ADP | Third Party Advisory |
| https://github.com/WWBN/AVideo/commit/8f53e9d9c6aaa07d51ace30691981edbbfb5ca1c | [email protected] | Patch |
| https://github.com/WWBN/AVideo/security/advisories/GHSA-mmw7-wq3c-wf9p | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-345 | Insufficient Verification of Data Authenticity | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wwbn avideo | <= 26.0 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 22, 2026 | Initial Analysis | [email protected] |
| Apr 8, 2026 | CVE Modified | CISA-ADP |
| Apr 7, 2026 | New CVE Received | [email protected] |