The elink – Embed Content plugin for WordPress is vulnerable to Malicious Redirect in all versions up to, and including, 1.1.0. This is due to the plugin not restricting URLS that can be supplied through the elink shortcode. This makes it possible for authenticated attackers, with Contributor-level access and above, to supply an HTML file that can be leverged to redirect users to a malicious domain.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.