CVE-2021-4416

Published: Jul 12, 2023Modified: Jun 17, 2026

4.3

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Exploitability: 2.8 / Impact: 1.4

Source: security@wordfence.com (Secondary)

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 (1)

Products: Wp Mpdf Project: Wp Mpdf

Wp Mpdf Project

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Wp Mpdf Project Wp Mpdf	Up to 3.5.1

Related CWEs

Cross-Site Request Forgery (CSRF)

The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

References (18)

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

Source: security@wordfence.com

Third Party Advisory

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

Source: security@wordfence.com

Third Party Advisory

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

Source: security@wordfence.com

Third Party Advisory

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

Source: security@wordfence.com

Third Party Advisory

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

Source: security@wordfence.com

Third Party Advisory

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

Source: security@wordfence.com

Third Party Advisory

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

Source: security@wordfence.com

Third Party Advisory

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

Source: security@wordfence.com

Patch

https://www.wordfence.com/threat-intel/vulnerabilities/id/c47386ee-25c8-4a77-92e8-5a82afc9c826?source=cve

Source: security@wordfence.com

Third Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Patch

https://www.wordfence.com/threat-intel/vulnerabilities/id/c47386ee-25c8-4a77-92e8-5a82afc9c826?source=cve

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

Timeline

No history available yet.