The wp-fastest-cache plugin before 0.8.4.9 for WordPress has SQL injection in wp-admin/admin-ajax.php?action=wpfc_wppolls_ajax_request via the poll_id parameter.
https://wordpress.org/plugins/wp-fastest-cache/#developers
Source: Mitre, NVD
Published: 2019-08-14
Updated: 2019-08-19
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.01484