CVE-2026-8787— Firebase Support & Chat Management <= 3.1.1 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation
Possible ATT&CK Techniques 1AI
T1136 · Create AccountAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| devsabbirahmed | Firebase Support & Chat Management | <= 3.1.1 | affected |
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I. Basic Information for CVE-2026-8787
Vulnerability Information
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Vulnerability Title
Firebase Support & Chat Management <= 3.1.1 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
特权管理不恰当
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| devsabbirahmed | Firebase Support & Chat Management | <= 3.1.1 | - |
II. Public POCs for CVE-2026-8787
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Patches & Fixes for CVE-2026-8787 (3)
Vendor Advisories for CVE-2026-8787 (1)
IV. Related Vulnerabilities
Same weakness: CWE-269
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Acer Care Center creates a Named Pipe with a weak Security D - CVE-2026-6419
Wishlist Member <= 3.30.1 - Missing Authorization to Authent - CVE-2026-6897
Wishlist Member <= 3.30.1 - Missing Authorization to Authent
V. Comments for CVE-2026-8787
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