CVE Catalog

CVE-2026-34368

MediumCVSS 5.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.24%

15th percentile - higher than 15% of all known CVEs

Summary

WWBN AVideo versions up to and including 26.0 contain a Time-of-Check-Time-of-Use (TOCTOU) race condition in the transferBalance() method in plugin/YPTWallet/YPTWallet.php. The method reads the sender's wallet balance, checks sufficiency in PHP, then writes the new balance without database transactions or row-level locking. An attacker with multiple authenticated sessions can send concurrent transfer requests that all read the same stale balance, resulting in only one deduction while the recipient is credited multiple times.

Risk Assessment

Unauthorized crediting of the recipient's wallet balance is possible, leading to financial loss or abuse in the payment system. The vulnerability requires authentication but can be exploited by a malicious user.

Recommendation

Update AVideo to a version containing commit 34132ad5159784bfc7ba0d7634bb5c79b769202d. Implementing database transactions and row-level locking is essential to eliminate the race condition.

Other vulnerabilities in WWBN AVideo

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Original NVD description (English source)

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `transferBalance()` method in `plugin/YPTWallet/YPTWallet.php` contains a Time-of-Check-Time-of-Use (TOCTOU) race condition. The method reads the sender's wallet balance, checks sufficiency in PHP, then writes the new balance — all without database transactions or row-level locking. An attacker with multiple authenticated sessions can send concurrent transfer requests that all read the same stale balance, each passing the balance check independently, resulting in only one deduction being applied while the recipient is credited multiple times. Commit 34132ad5159784bfc7ba0d7634bb5c79b769202d contains a fix.

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