CVE-2021-4416

4.3 MEDIUM
Published: July 12, 2023 Modified: April 08, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
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

18 reference(s) from NVD

Quick Stats

CVSS v3 Score
4.3 / 10.0
EPSS (Exploit Probability)
0.1%
34th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-352

Affected Vendors

wp-mpdf_project

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