Better Messages <= 2.15.33 - Missing Authorization to Authenticated (Custom+) Chat-Room Transcript Disclosure via '/thread/<id>' REST Endpoint

6.5
Missing Authorization
CVE CVE-2026-89334
CVSS 6.5 (Medium)
Publicly Published September 18, 2026
Last Updated September 19, 2026
Researcher Supakiad S. (m3ez) - E-CQURITY (Thailand)

Description

The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.15.33. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with custom-level access and above, to access the full message transcript, thread metadata, and user data of any chat-room thread without authentication. This is only exploitable when the chat room's only_joined_can_read setting retains its default value of '0'.

References

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Vulnerability Details for Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots

Software Type Plugin
Software Slug bp-better-messages (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.0.0, or a newer patched version
Affected Version
  • <= 2.15.33
Patched Version
  • 3.0.0

Recent vulnerabilities in Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots

# Title CVE ID CVSS Researchers Date
1 Better Messages <= 3.0.4 - Authenticated (Subscriber+) Stored DOM-Based Cross-Site Scripting via User Display Name CVE-2026-94376 6.4 Adrien Brunner September 24, 2026
2 Better Messages <= 3.0.4 - Authenticated (Subscriber+) SQL Injection via 'group_id' Message Meta Parameter CVE-2026-93899 6.5 Ivaylo September 24, 2026
3 Better Messages <= 2.15.33 - Unauthenticated Information Exposure Spoofing via 'X-Real-IP' Header via /guests/register CVE-2026-89093 5.3 Jonah Burgess (CryptoCat) September 18, 2026
4 Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress <= 2.15.22 - Reflected Cross-Site Scripting via 'icn' Parameter CVE-2026-18555 6.1 Jonah Burgess (CryptoCat) September 15, 2026
5 Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots <= 2.15.27 - Unauthenticated Stored Cross-Site Scripting CVE-2026-84812 7.2 daroo September 2, 2026
6 Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots <= 2.15.22 - Unauthenticated Stored Cross-Site Scripting CVE-2026-32547 7.2 daroo August 18, 2026
7 Better Messages <= 2.15.19 - Authenticated (Administrator+) Arbitrary File Deletion via Path Traversal via 'file' Parameter CVE-2026-16585 7.2 Wordfence PRISM July 27, 2026
8 Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots <= 2.14.16 - Unauthenticated Insecure Direct Object Reference CVE-2026-42736 5.3 dodoh4t May 27, 2026
9 Freemius <= 2.10.1 - Reflected DOM-Based Cross-Site Scripting via url Parameter CVE-2024-13362 6.1 Asaf Mozes April 30, 2026
10 Better Messages – Live Chat for WordPress, BuddyPress, PeepSo, Ultimate Member, BuddyBoss <= 2.10.2 - Unauthenticated Stored Cross-Site Scripting CVE-2025-14154 6.1 zer0gh0st December 16, 2025

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