What the vulnerability does
01Description
The Essential Chat Support plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.0.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to reset all plugin configuration settings — including general settings, display rules, custom CSS, and WooCommerce tab settings — to their defaults by sending a POST request with ecs_reset_settings=1.
Explanation of Vulnerability in Simple Terms
02Summary
Essential Chat Support versions 1.0.1 and earlier lack proper authorization checks, allowing unauthenticated attackers to modify chat data or settings over the network. No user interaction is required. The vulnerability affects the integrity of chat records but does not expose sensitive information or cause service disruption.
What an attacker can do
03Attacker Capabilities
Modify chat support data or settings without authentication.
Potential impact on your site
04Site Impact
Chat support records or configuration could be altered by unauthorized parties.
Conditions required to exploit
05Prerequisites
Network access to the site; no authentication or user interaction required.
Key dates
06Disclosure timeline
May 16, 2026
CVE published
May 18, 2026
Record updated
