CVE-2025-66113 MEDIUM

CVE-2025-66113: WordPress Better Chat Support for Messenger plugin <= 1.2.18 - Broken Access Control vulnerability

Vendor Themeatelier
Product Better Chat Support for Messenger
Weakness CWE-862 · Missing authorization
Published November 21, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Missing Authorization vulnerability in ThemeAtelier Better Chat Support for Messenger better-chat-support allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Better Chat Support for Messenger: from n/a through <= 1.2.18.

Explanation of Vulnerability in Simple Terms

02Summary

Better Chat Support for Messenger versions up to 1.2.18 lack proper authorization checks, allowing unauthenticated attackers to modify data through network requests. The vulnerability requires no user interaction and affects the integrity of stored information. Site administrators should update to a version newer than 1.2.18 to remediate this issue.

What an attacker can do

03Attacker Capabilities

Modify data in the plugin without authentication or user interaction.

Potential impact on your site

04Site Impact

Unauthorized users can alter chat support data, messages, or plugin settings without logging in.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

November 21, 2025 CVE published
April 28, 2026 Record updated