What the vulnerability does
01Description
The Featured Image from URL (FIFU) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a post's Featured Image custom fields in all versions up to, and including, 5.2.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. NOTE: This vulnerability was partially fixed in version 5.2.2.
Explanation of Vulnerability in Simple Terms
02Summary
Featured Image from URL (FIFU) versions 5.2.7 and earlier contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts. The vulnerability affects the plugin's handling of user input, enabling attackers with low-level access to compromise other users' sessions or steal sensitive data. The impact extends beyond the plugin itself due to scope change.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in other users' browsers and steals their session data or credentials.
Potential impact on your site
04Site Impact
Authenticated attackers can compromise admin or editor accounts and modify site content or steal sensitive information.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account (e.g., contributor or subscriber) on the WordPress site.
Key dates
06Disclosure timeline
October 7, 2025
CVE published
April 8, 2026
Record updated
