What’s Vulnerable › Vulnerabilities

CVE-2023-6561: Featured Image from URL (FIFU) <= 4.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via featured image alt text

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-11 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• marceljm Featured Image from URL (FIFU): before 4.5.4 — fixed in 4.5.4

How to fix

Upgrade to a fixed version: marceljm Featured Image from URL (FIFU) 4.5.4. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/featured-image-from-url/trunk/admin/category.php#L62
• https://plugins.trac.wordpress.org/browser/featured-image-from-url/trunk/admin/meta-box.php#L213
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3009699%40featured-image-from-url%2Ftrunk&old=3003342%40featured-image-from-url%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/d4d5ae93-000e-4001-adfa-c11058032469?source=cve
• https://plugins.trac.wordpress.org/browser/featured-image-from-url/trunk/admin/category.php#L62
• https://plugins.trac.wordpress.org/browser/featured-image-from-url/trunk/admin/meta-box.php#L213
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3009699%40featured-image-from-url%2Ftrunk&old=3003342%40featured-image-from-url%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/d4d5ae93-000e-4001-adfa-c11058032469?source=cve

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