WordPlus Better Messages Plugin up to 2.15.33 on WordPress authorization

Summaryinfo

A vulnerability, which was classified as problematic, has been found in WordPlus Better Messages Plugin up to 2.15.33. This affects an unknown part. The manipulation leads to authorization. This vulnerability is traded as CVE-2026-89334. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in WordPlus Better Messages Plugin up to 2.15.33 and classified as problematic. This issue affects an unknown functionality. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is confidentiality. The summary by CVE is:

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'.

The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-89334 since 09/11/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/19/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• WordPlus

Name

• Better Messages Plugin

Version

• 2.15.0
• 2.15.1
• 2.15.2
• 2.15.3
• 2.15.4
• 2.15.5
• 2.15.6
• 2.15.7
• 2.15.8
• 2.15.9
• 2.15.10
• 2.15.11
• 2.15.12
• 2.15.13
• 2.15.14
• 2.15.15
• 2.15.16
• 2.15.17
• 2.15.18
• 2.15.19
• 2.15.20
• 2.15.21
• 2.15.22
• 2.15.23
• 2.15.24
• 2.15.25
• 2.15.26
• 2.15.27
• 2.15.28
• 2.15.29
• 2.15.30
• 2.15.31
• 2.15.32
• 2.15.33

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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