HIGHVulnerability
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Global

NVD HIGH: CVE-2026-8787 — The Firebase Support & Chat Management plugin for WordPress is vulnerable to pri...

·Source: NIST NVD

Updated:

Executive Summary

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)

Analysis

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. CVSS Score: 8.8. Published: 2026-05-27T07:16:15.060.

Indicators of Compromise (1)

CVE (1)
CVE-2026-8787
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on May 27, 2026. Verified by: NIST.

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