What the vulnerability does
01Description
The Featured Image from URL (FIFU) plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.3.1. This is due to insufficient validation of user-supplied URLs before passing them to the getimagesize() function in the Elementor widget integration. This makes it possible for authenticated attackers, with Contributor-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services via the fifu_input_url parameter in the FIFU Elementor widget granted they have permissions to use Elementor.
Explanation of Vulnerability in Simple Terms
02Summary
Featured Image from URL (FIFU) versions up to 5.3.1 contain a server-side request forgery vulnerability. An authenticated user can craft requests that cause the site to make HTTP requests to internal or external systems on the attacker's behalf. This could expose internal services or be used to interact with restricted resources. Update to a version newer than 5.3.1.
What an attacker can do
03Attacker Capabilities
Make the site send HTTP requests to internal or external systems the attacker specifies.
Potential impact on your site
04Site Impact
Authenticated attackers can probe internal networks, access restricted services, or exfiltrate data via forced requests.
Conditions required to exploit
05Prerequisites
Attacker must have a WordPress user account with at least low-level privileges.
Key dates
06Disclosure timeline
January 10, 2026
CVE published
April 8, 2026
Record updated
