Is CVE-2026-43883 actively exploited?

No active exploitation of CVE-2026-43883 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-43883 be exploited remotely?

Yes. CVE-2026-43883 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-43883?

CVE-2026-43883 has a CVSS score of 4.2 (MEDIUM).

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MEDIUM

CVE-2026-43883

CWE-639Published: May 11, 2026· Updated: May 12, 2026

4.2

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.6th

Official Description

WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/PayPalYPT/agreementCancel.json.php cancels a PayPal billing agreement using an attacker-supplied agreement parameter without verifying that the authenticated user owns the agreement. A low-privilege authenticated user who learns or obtains another user's PayPal billing agreement ID can silently suspend the victim's recurring subscription, causing revenue loss to the platform and loss of paid service to the victim. Commit 0da3dcff1eda2f497694bf82b559829471c292c2 contains an updated fix.

NVD Source

Technical Analysis

CVE-2026-43883 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.