CVE-2026-93899

Better Messages <= 3.0.4 - Authenticated (Subscriber+) SQL Injection via 'group_id' Message Meta Parameter

2026-09-24 18:12
Ivaylo

Strategic Overview

Status
Patched in 3.0.5
Affected Plugin
Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
Affected Version
<= 3.0.4
CVSS
6.5Medium
Weakness type
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE
CVE-2026-93899
View all Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots vulnerabilities

At a glance

CVE-2026-93899 is a medium-severity Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in the Better Messages WordPress plugin, affecting versions <= 3.0.4. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 3.0.5; sites on affected versions should update now. Disclosed September 2026, reported by Ivaylo.

Vulnerability Overview

The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to generic SQL Injection via 'group_id' Message Meta Parameter in all versions up to, and including, 3.0.4 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. Exploitation requires the BuddyBoss Platform plugin to be installed with its Social Groups component disabled, a state that persists on any site that has previously toggled the Groups component off since BuddyBoss does not drop the wp_bp_groups table upon deactivation.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality.

CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Better Messages <= 3.0.4 carries this weakness at group_id, and reaching it takes an account at Subscriber level or above. SQL injection happens when request data is concatenated into a query instead of being bound as a parameter, letting an attacker change the structure of the statement rather than just its values.

A working injection can read any table the database user can see, which on a WordPress install means user records, password hashes and session or API secrets stored in options. For Better Messages the fix is 3.0.5: builds <= 3.0.4 are affected, anything from 3.0.5 onward is not.

Remediation

Update to version 3.0.5, or a newer patched version

How does WordSec protect against this?

An attacker needs Subscriber access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Better Messages 3.0.5 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-93899https://www.wordfence.com/threat-intel/vulnerabilities/id/553a9a16-97e0-4443-9d4b-dd901b86141bhttps://nvd.nist.gov/vuln/detail/CVE-2026-93899

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C