CVE-2026-121636
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Nov 06, 2026
Vendor
unknown
Description
The Quick Event Manager WordPress plugin before 9.19 does not verify the authenticity of PayPal payment notifications before marking event registrations as paid, which could allow unauthenticated attackers to mark registrations as paid without making a payment.