WordPress Popular Posts <= 5.3.2 - Authenticated Arbitrary File Upload

Unrestricted Upload of File with Dangerous Type
CVE CVE-2021-42362
CVSS High (8.8)
Publicly Published November 12, 2021
Last Updated January 22, 2024
Researcher Jerome Bruandet
Description

The WordPress Popular Posts WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation found in the ~/src/Image.php file which makes it possible for attackers with contributor level access and above to upload malicious files that can be used to obtain remote code execution, in versions up to and including 5.3.2.

References

1 affected software package

Software Type Plugin
Software Slug wordpress-popular-posts (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 5.3.2
Patched Version
  • 5.3.3
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.