CVE-2020-36849 CRITICAL

CVE-2020-36849: AIT CSV import/export <= 3.0.3 - Unauthenticated Arbitrary File Upload

Vendor Ait Themes
Product AIT CSV import/export
Weakness CWE-434 · Unrestricted file upload
Published July 12, 2025
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 AIT CSV import/export plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the /wp-content/plugins/ait-csv-import-export/admin/upload-handler.php file in versions up to, and including, 3.0.3. This makes it possible for unauthorized attackers to upload arbitrary files on the affected sites server which may make remote code execution possible.

Explanation of Vulnerability in Simple Terms

02Summary

AIT CSV import/export versions 3.0.3 and earlier allow unauthenticated attackers to upload arbitrary files to the site without restrictions. An attacker can upload malicious files (such as PHP scripts) over the network with no authentication required. This can lead to complete compromise of the site, including data theft, defacement, and malware installation.

What an attacker can do

03Attacker Capabilities

Upload arbitrary files to the site and execute malicious code without authentication.

Potential impact on your site

04Site Impact

Complete site compromise: attackers can run code, steal data, deface content, or install malware.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

July 12, 2025 CVE published
April 8, 2026 Record updated