---
id: CVE-2026-18555
title: >-
  The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
  plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the
  'icn' parameter in all versions up to, and including, 2.15.22 due to
  insufficient …
summary: >-
  The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
  plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the
  'icn' parameter in all versions up to, and including, 2.15.22 due to
  insufficient …
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: wordplus
product: 'Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots'
affected:
  - >-
    better_messages_chat_rooms_group_chat_private_messages_ai_chat_bots <=
    2.15.22
published: '2026-09-16'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T18:17:05.417'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18555'
references:
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3634693/bp-better-messages/tags/2.15.23/inc/shortcodes.php
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/e24a672b-0ba4-4061-971d-255a61aed60b?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-18T17:33:07.239877Z'
epss: 0.00226
epssPercentile: 0.11906
ingestedAt: '2026-09-16T04:49:46.352Z'
---

## Overview

The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'icn' parameter in all versions up to, and including, 2.15.22 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.