An issue was discovered in the WP Mail plugin before 1.2 for WordPress. The replyto parameter when composing a mail allows for a reflected XSS. This would allow you to execute JavaScript in the context of the user receiving the mail.
https://cjc.im/advisories/0006/
http://www.securityfocus.com/bid/96211
Source: Mitre, NVD
Published: 2017-02-10
Updated: 2025-04-20
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.00193