CVE Catalog

CVE-2026-123486

MediumCVSS 5.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.17%

6th percentile - higher than 6% of all known CVEs

Summary

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.

Risk Assessment

The organization may experience fraudulent duplicate wallet credits and subscription renewals, leading to financial losses and payment system integrity breaches.

Recommendation

Update AVideo to a version later than 29.4.0. Implement atomic deduplication mechanisms for IPN notifications.

Other vulnerabilities in WWBN AVideo

See all
Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS