CVE-2018-11486
An issue was discovered in the MULTIDOTS Advance Search for WooCommerce plugin 1.0.9 and earlier for WordPress. This plugin is vulnerable to a stored Cross-site scripting (XSS) vulnerability. A non-authenticated user can save the plugin settings and inject malicious JavaScript code in the Custom CSS textarea field, which will be loaded on every site page.
Source: CVE-2018-11486