CVE-2026-123486 WWBN AVideo 29.0 through 29.4.0 Race Condition in PayPal IPN Deduplication via ipn.php
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123486?
CVE-2026-123486 is a medium-severity vulnerability in WWBN AVideo, published on 6 Nov 2026.
Official description
WWBN AVideo 29.0 through 29.4.0 contains a race condition vulnerability in plugin/PayPalYPT/ipn.php that allows attackers to bypass IPN replay protection due to a non-atomic deduplication check and insert. Attackers can concurrently replay a captured valid recurring-payment notification so both requests pass isRecurringPaymentIdUsed(), obtaining duplicate wallet credits and subscription renewals.
Weakness: CWE-367
Which versions are affected by CVE-2026-123486?
How do I fix CVE-2026-123486?
No fix has been published for CVE-2026-123486 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123486 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-123486 exists.
Sources
Also known as GHSA-8pjw-rf82-7c57, GHSA-q77r-9mjq-mjw6.