CVE-2026-32573 CRITICAL

CVE-2026-32573: WordPress Nelio AB Testing plugin <= 8.2.7 - Remote Code Execution (RCE) vulnerability

Vendor Nelio Software
Product Nelio AB Testing
Weakness CWE-94 · Code injection
Published March 25, 2026
Last update April 29, 2026

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Improper Control of Generation of Code ('Code Injection') vulnerability in Nelio Software Nelio AB Testing nelio-ab-testing allows Code Injection.This issue affects Nelio AB Testing: from n/a through <= 8.2.7.

Explanation of Vulnerability in Simple Terms

02Summary

Nelio AB Testing versions up to 8.2.7 contain a code injection vulnerability that allows high-privilege users to execute arbitrary PHP code on the site. An attacker with administrator or equivalent access can inject malicious code through the plugin's input handling. This affects confidentiality, integrity, and availability of the entire WordPress installation.

What an attacker can do

03Attacker Capabilities

Run arbitrary PHP code on the site with full site privileges.

Potential impact on your site

04Site Impact

A compromised admin account can execute code affecting the entire site, including data theft, malware injection, and site takeover.

Conditions required to exploit

05Prerequisites

Attacker must have high-level admin or equivalent privileges on the WordPress site.

Key dates

06Disclosure timeline

March 25, 2026 CVE published
April 29, 2026 Record updated

Related vulnerabilities

08Related CVE