Security Advisory
CVE-2026-0686
CVE vulnerability detail — eXtreme Datacenter Security Operations
Description
The Webmention plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.6.2 in the MF2::parse_authorpage function via the Receiver::post function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.