What the vulnerability does
01Description
The ConvertPlus plugin for WordPress is vulnerable to unauthorized modification of data that can lead to a denial of service due to a missing capability check on the 'cp_dismiss_notice' AJAX endpoint in all versions up to, and including, 3.5.30. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update option values to '1' on the WordPress site. This can be leveraged to update an option that would create an error on the site and deny service to legitimate users or be used to set some values to true such as registration.
Explanation of Vulnerability in Simple Terms
02Summary
ConvertPlus versions 3.5.30 and earlier lack proper authorization checks, allowing authenticated users to modify or delete data they should not have access to. An attacker with a low-privilege account can change site content or disable functionality without restriction. This affects the integrity and availability of sites using the plugin.
What an attacker can do
03Attacker Capabilities
Modify or delete site data and functionality without proper permission checks.
Potential impact on your site
04Site Impact
Unauthorized users can alter or remove critical site content and settings.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the site.
Key dates
06Disclosure timeline
February 12, 2025
CVE published
April 8, 2026
Record updated
