Featured Image from URL (FIFU) <= 4.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via featured image alt text

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2023-6561
CVSS 6.4 (Medium)
Publicly Published December 14, 2023
Last Updated January 22, 2024
Researcher Webbernaut


The Featured Image from URL (FIFU) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the featured image alt text in all versions up to, and including, 4.5.3 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.



Vulnerability Details for Featured Image from URL (FIFU)

Software Type Plugin
Software Slug featured-image-from-url (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.5.4, or a newer patched version
Affected Version
  • <= 4.5.3
Patched Version
  • 4.5.4

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