CVE-2026-8787
HIGH
8,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Description
AI Translation Available
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.
269
Improper Privilege Management
DraftCommon Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
https://plugins.trac.wordpress.org/browser/admin-chat-box/tags/3.1.1/inc/ACB_Aj…
https://plugins.trac.wordpress.org/browser/admin-chat-box/tags/3.1.1/inc/ACB_Aj…
https://plugins.trac.wordpress.org/browser/admin-chat-box/trunk/inc/ACB_AjaxHan…
https://plugins.trac.wordpress.org/browser/admin-chat-box/trunk/inc/ACB_AjaxHan…
https://www.wordfence.com/threat-intel/vulnerabilities/id/90783d75-a255-4133-ac…