Webmention WordPress Plugin Server-Side Request Forgery Vulnerability

A Server-Side Request Forgery (SSRF) vulnerability has been identified in the Webmention plugin for WordPress, affecting all versions through 5.6.2. The vulnerability arises in the 'Tools::read' function, where authenticated attackers with Subscriber-level access or higher can send web requests to arbitrary locations. This could be exploited to query and modify information from internal services.

Impact

Exploitation of this vulnerability allows authenticated users to make unauthorized requests to internal services, potentially leading to unauthorized data access or modification.

Remediation

Users can update to version 5.7.0 or a newer patched version to address this vulnerability.