WordPress Plugin Cookie Law Bar 1.2.1 – ‘clb_bar_msg’ Stored Cross-Site Scripting (XSS)
# Exploit Title: WordPress Plugin Cookie Law Bar 1.2.1 - 'clb_bar_msg' Stored Cross-Site Scripting (XSS) # Date: 2021-05-24 # Exploit Author: Mesut Cetin # Vendor Homepage: https://www.cookielawinfo.com/wordpress-plugin/ # Software Link: https://wordpress.org/plugins/cookie-law-bar/ # Version: 1.2.1 # Tested on: Ubuntu 16.04 LTS, Wordpress 5.7.2 # the "Bar Message" text field is vulnerable to stored XSS due to unsanitized user input # an authenticated attacker can retrieve cookies / sensitive data of all Wordpress users # proof of concept # navigate to the settings of the Cookie Law Bar under http://localhost/wp-admin/options-general.php?page=clb # inject the payload: </script><script>alert(document.cookie)</script> into the "Bar Message field" and save it # browsing through the Wordpress pages shows the cookies |