The WP Opt-in WordPress plugin through 1.4.1 is vulnerable to CSRF which allows changed plugin settings and can be used for sending spam emails.
https://wpscan.com/vulnerability/46b634f6-92bc-4e00-a4c0-c25135c61922
Source: Mitre, NVD
Published: 2022-07-11
Updated: 2022-07-15
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N