Firebase Support & Chat Management <= 3.1.1 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation
| CVE | CVE-2026-8787 |
|---|---|
| CVSS | 8.8 (High) |
| Publicly Published | May 26, 2026 |
| Last Updated | June 10, 2026 |
| Researcher |
Farrukh Ziyaev
|
Description
The Firebase Support & Chat Management plugin for WordPress is vulnerable to privilege escalation in all versions up to, and including, 3.1.1. This is due to the `firebase_auth()` function authenticating the request as the WordPress user whose email is supplied in the `user_email` POST parameter without verifying ownership of that email (no Firebase ID token signature/issuer/audience verification). This makes it possible for authenticated attackers, with Subscriber-level access and above, to log in as an arbitrary existing user — including an Administrator — by submitting that user's email address to the `acb_firebase_auth` AJAX action, resulting in full account takeover.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for Admin Chat Management
| Software Type | Plugin |
|---|---|
| Software Slug | admin-chat-box (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 3.1.2, or a newer patched version |
| Affected Version |
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| Patched Version |
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