The Bitly's WordPress Plugin plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on several AJAX actions in all versions up to, and including, 2.7.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update and retrieve plugin settings.

Missing Authorization vulnerability in Bitly allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Bitly: from n/a through 2.7.2.

The Bitly's plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wpbitly' shortcode in all versions up to, and including, 2.7.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.