CVE-2018-11309: Membermouse

Critical severity, CVSS 9.8. EPSS: 2.1% chance of exploitation in the next 30 days.

Blind SQL injection in coupon_code in the MemberMouse plugin 2.2.8 and prior for WordPress allows an unauthenticated attacker to dump the WordPress MySQL database via an applyCoupon action in an admin-ajax.php request.

Affected products

• Membermouse Membermouse: before 2.2.8 (fixed in 2.2.8)

Published 2018-05-28. Last modified 2026-06-17.