The Notifications for Forms & WordPress Actions WordPress plugin before 2.6 does not validate a user-supplied value before using it to build a server-side file inclusion path, allowing authenticated users with subscriber-level access and above to include and execute arbitrary local PHP files on the server.
Exploitability
AV:NAC:HPR:LUI:NScope
S:UImpact
C:HI:HA:H7.5/CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H