wp-mpdf <= 3.5.1 - Cross-Site Request Forgery Bypass

Cross-Site Request Forgery (CSRF)
CVE CVE-2021-4416
CVSS Medium (4.3)
Publicly Published June 21, 2021
Last Updated January 22, 2024
Researcher Jerome Bruandet
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.

References

1 affected software package

Software Type Plugin
Software Slug wp-mpdf (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 3.5.1
Patched Version
  • 3.5.2
This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.
License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. License Detail.