CVE-2026-89334 Details
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'.
A vulnerability exists in the Better Messages WordPress plugin, specifically in versions up to and including 2.15.33. The issue stems from the plugin's failure to properly verify user authorization, allowing authenticated attackers with custom-level access or higher to bypass restrictions. Exploitation of this vulnerability enables access to the complete message transcript, thread metadata, and user data from any chat room thread. The vulnerability is only effective when the chat room's 'only_joined_can_read' setting is set to its default value of '0'.
Users are advised to update the Better Messages WordPress plugin to version 3.0.0 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 19, 2026CISA-ADP
Assessed Sep 19, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Better Messages | <= 2.15.33 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 19, 2026 | CVE Modified | CISA-ADP |
| Sep 19, 2026 | New CVE Received | [email protected] |