AUGUST 15, 2026
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Case File

CVE-2026-15965

HIGH · CVSS 8.8 Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-15 · Last synced 2026-08-15

CyberRota Analysis

AI-Generated

The MaxUpload – Big File Uploads plugin for WordPress is susceptible to arbitrary file uploads due to inadequate validation of the final assembled filename, allowing unauthenticated attackers to upload potentially executable files. This vulnerability could lead to remote code execution, posing a significant risk to the integrity and security of affected WordPress sites. WordPress administrators using this plugin should prioritize immediate remediation to mitigate potential exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
remote code execution code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-15965
Severity
HIGH
CVSS
8.8
EPSS
N/A
WordPress

Original NVD Description

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.