Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Constant Contact Constant Contact Forms.This issue affects Constant Contact Forms: from n/a through 2.4.2.
Unvalidated input and lack of output encoding in the Constant Contact Forms WordPress plugin, versions before 1.8.8, lead to multiple Stored Cross-Site Scripting vulnerabilities, which allowed high-privileged user (Editor+) to inject arbitrary JavaScript code or HTML in posts where the malicious form is embed.