Broken Link Notifier WordPress Plugin Server-Side Request Forgery Vulnerability

A Server-Side Request Forgery (SSRF) vulnerability has been identified in the Broken Link Notifier plugin for WordPress, affecting all versions through 1.3.0. The vulnerability arises in the ajax_blinks() function, which calls check_url_status_code(). This flaw allows unauthenticated attackers to send web requests to arbitrary locations from the web application, potentially querying and modifying information from internal services.

Impact

Exploitation of this vulnerability allows for unauthorized web requests to be made from the WordPress application to internal services, which could be used to access or alter sensitive information.

Remediation

Users are advised to update the Broken Link Notifier plugin to version 1.3.1 or later.