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CVE-2021-4416

MEDIUM

4.3

CVSS Severity Score

EPSS Score0.0670%

EPSS Percentile22.63th

PublishedJul 12, 2023

Last ModifiedApr 8, 2026

Vulnerability Description

The wp-mpdf plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.5.1. This is due to missing or incorrect nonce validation on the mpdf_admin_savepost() function. This makes it possible for unauthenticated attackers to save post data via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected Platforms (CPE)

📦

Wp Mpdf Project

Wp Mpdf

<= 3.5.1

References & Advisories

🔗 https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/

🔗 https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/

🔗 https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/

🔗 https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/

🔗 https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/

🔗 https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/

🔗 https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/

🔗 https://plugins.trac.wordpress.org/changeset/2549363/wp-mpdf/trunk/wp-mpdf.php

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