Better Messages <= 3.0.4 - Authenticated (Subscriber+) Stored DOM-Based Cross-Site Scripting via User Display Name
| CVE | CVE-2026-94376 |
|---|---|
| CVSS | 6.4 (Medium) |
| Publicly Published | September 24, 2026 |
| Last Updated | September 25, 2026 |
| Researcher |
Adrien Brunner
|
Description
The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via User Display Name in all versions up to, and including, 3.0.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is exploitable by Subscriber-level users because WordPress core's sanitize_text_field() preserves HTML-entity-encoded payloads (e.g., an iframe srcdoc attribute), allowing the encoded string to be stored as a display name without requiring the unfiltered_html capability, and the plugin subsequently decodes it server-side before rendering.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
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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 3.0.5, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
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