---
id: CVE-2026-89093
title: >-
  The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
  plugin for WordPress is vulnerable to Information Exposure by Spoofing in all
  versions up to, and including, 2.15.33
summary: >-
  The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
  plugin for WordPress is vulnerable to Information Exposure by Spoofing in all
  versions up to, and including, 2.15.33. This is due to the `is_ai_bot_user()`
  fun…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-287
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 <=
    2.15.33
published: '2026-09-19'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T13:33:33.387'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89093'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.33/inc/chats.php#L2145
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.33/inc/chats.php#L2168
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.33/inc/chats.php#L2196
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.33/inc/functions.php#L4155
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.33/inc/guests.php#L311
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.33/inc/guests.php#L467
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15.33/inc/guests.php#L577
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?old_path=bp-better-messages%2Ftags%2F2.15.33%2Finc%2Ffunctions.php&new_path=bp-better-messages%2Ftags%2F3.0.0%2Finc%2Ffunctions.php
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/df28ecd7-d463-48b7-95e6-8adc9f34d6bd?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
epss: 0.00325
epssPercentile: 0.25687
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-19T13:21:08.846737Z'
ingestedAt: '2026-09-19T02:56:32.976Z'
---

## Overview

The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to Information Exposure by Spoofing in all versions up to, and including, 2.15.33. This is due to the `is_ai_bot_user()` function identifying privileged internal AI bot accounts by performing a prefix check for `'ai-chat-bot-'` against a guest record's stored IP address, which is populated verbatim from the client-controlled `X-Real-IP` request header during unauthenticated guest registration. This makes it possible for unauthenticated attackers to register a guest identity that the plugin treats as its own internal AI bot, bypassing the per-room role allowlist, draft-status check, and join filters — which are all short-circuited by the bot check in `user_can_join()` and `user_can_read()` — to join administrator-restricted chat rooms, post messages into them, and read the private message history of other users.

## Remediation

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