Better Messages <= 2.15.33 - Unauthenticated Information Exposure Spoofing via 'X-Real-IP' Header via /guests/register
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots | <= 2.15.33 | 3.0.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-287- Platform
- WordPress
- Package
Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots- Disclosed
- 18.09.2026
- Updated
- 11.10.2026 10:23
Sources and licenses
Wordfence Intelligence - df28ecd7-d463-48b7-95e6-8adc9f34d6bd - Wordfence Intelligence
Copyright 1999-2026 The MITRE Corporation
Copyright 2012-2026 Defiant Inc.
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Wordfence Intelligence - Defiant, Inc. Copyright Defiant, Inc. All rights reserved except as granted below. License grant, section 3.1 of the Wordfence Intelligence Terms and Conditions (January 26, 2026): Subject to this Agreement, Company hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute the Service. Any copy you make for such purposes is authorized provided that you reproduce Company’s copyright designation, this license, and the license of any disclosed Company licensor in any such copy. Full applicable Agreement: https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/
Vulnerability history: Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 25
- First → latest
- 10.2021 09.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 9
- Medium 16
Disclosures per year
- 2021: 2
- 2022: 6
- 2023: 2
- 2024: 1
- 2025: 4
- 2026: 10
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Better Messages <= 2.15.33 - Unauthenticated Information Exposure Spoofing via 'X-Real-IP' Header via /guests/register this entry
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