CVSS
8.8
CVSS v3.1
EPSS
N/A
Exploit Prediction Score
Published
August 15, 2026
Exploitability
No EPSS data available
The MaxUpload – Big File Uploads – Increase Maximum File Upload Size plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.4.0 via the handle_upload function. This is due to a filename-validation mismatch in the handle_upload function where extension and MIME checks are applied to the uploaded chunk's filename but not to the final assembled filename derived from the resumableFilename parameter. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.
No package data available.
Publisher and database URLs for this record (shown for attribution; reading stays in Bugflare).