CVE-2026-121636 · Package
NO FIX YET · SEE WHAT TO DO
The Quick Event Manager WordPress plugin before 9.19 does not check that PayPal payment notifications are genuine before marking event registrations as paid. An unauthenticated attacker can mark registrations as paid without paying.
first public Nov 6, 2026 · 1 source
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Sites running the Quick Event Manager WordPress plugin before 9.19 that take event registration payments through PayPal. Sites without this plugin or without PayPal payments are not affected by this description.
Not affected if paypal-not-used, plugin-9.19-or-later, plugin-not-installed
Who cares event-registration, paypal, wordpress, wordpress-plugin
9.19.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.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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