CVE-2021-4443 CRITICAL

CVE-2021-4443: WordPress Mega Menu <= 2.0.6 - Arbitrary File Creation

Vendor Quadlayers
Product QuadMenu – Mega Menu
Weakness CWE-434 · Unrestricted file upload
Published October 16, 2024
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

The WordPress Mega Menu plugin for WordPress is vulnerable to Arbitrary File Creation in versions up to, and including, 2.0.6 via the compiler_save AJAX action. This makes it possible for unauthenticated attackers to create arbitrary PHP files that can be used to execute malicious code.

Key dates

02Disclosure timeline

October 16, 2024 CVE published
April 8, 2026 Record updated