CVE-2026-89334 Missing authorization in Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
Authenticated attackers can access private chat transcripts and user data due to missing authorization checks in the Better Messages WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-89334?
CVE-2026-89334 is a medium-severity missing authorization vulnerability in wordplus Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots, published on 19 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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'.
Weakness: CWE-862
Which versions are affected by CVE-2026-89334?
How do I fix CVE-2026-89334?
No fix has been published for CVE-2026-89334 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-89334 being exploited?
There is no known exploitation of CVE-2026-89334 in the wild and no public exploit code.
Sources
Also known as GHSA-4f44-p79q-6vj4.