WordPress MaxUpload plugin <= 1.4.0 - Unauthenticated Arbitrary File Upload via 'resumableFilename' Parameter vulnerability

Unauthenticated Arbitrary File Upload via 'resumableFilename' Parameter vulnerability discovered by JIWOONG LEE kimchunbok - Hyundai Red Team in WordPress Plugin MaxUpload versions = 1.4.0...

CVE-2026-15965

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 handleupload function. This is due to a filename-validation mismatch in the handleupload function where extension an...

CVE-2026-15965

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 handleupload function. This is due to a filename-validation mismatch in the handleupload function where extension an...

CVE-2026-15965 MaxUpload <= 1.4.0 - Unauthenticated Arbitrary File Upload via 'resumableFilename' Parameter

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 handleupload function. This is due to a filename-validation mismatch in the handleupload function where extension an...

CVE-2026-15965 MaxUpload <= 1.4.0 - Unauthenticated Arbitrary File Upload via 'resumableFilename' Parameter

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 handleupload function. This is due to a filename-validation mismatch in the handleupload function where extension an...

EUVD-2026-58837

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 handleupload function. This is due to a filename-validation mismatch in the handleupload function where extension an...

CVE-2026-15965

The CVE-2026-15965 entry concerns the WordPress plugin “MaxUpload – Big File Uploads – Increase Maximum File Upload Size”. A root cause is a filename-validation mismatch in handle_upload: extension and MIME checks are applied to the uploaded chunk’s filename but not to the final assembled filenam...

PT-2026-72147

Name of the Vulnerable Software and Affected Versions MaxUpload – Big File Uploads – Increase Maximum File Upload Size versions prior to 1.4.1 Description An arbitrary file upload issue exists in the handle upload function. A filename-validation mismatch occurs because extension and MIME checks a...

CVE-2026-15965: Unrestricted Upload of File with Dangerous Type

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 handleupload function. This is due to a filename-validation mismatch in the handleupload function where extension an...