Is CVE-2026-39366 actively exploited?

No active exploitation of CVE-2026-39366 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-39366 be exploited remotely?

Yes. CVE-2026-39366 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-39366?

CVE-2026-39366 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-39366

CWE-345Published: April 7, 2026· Updated: Apr 8, 2026

6.5

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.7th

Official 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.

NVD Source

Technical Analysis

CVE-2026-39366 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 6.5.