EUVD-2026-64224
GHSA-3hq2-mp89-6vp5
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Network endpoint requires no WordPress authentication (PR:N); AC:H reflects attacker must register an unverified Firebase account bearing the target's email, which involves setup steps not guaranteed to succeed in all Firebase configurations.
Primary rating from Vendor (wpscan).
CVSS VectorVendor: wpscan
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
5DescriptionCVE.org
The Firebase Authentication WordPress plugin before 1.7.1 does not require the email address in an authentication token to be verified before matching it to a WordPress account and issuing a session, allowing unauthenticated attackers to log in as any user, including administrators.
AnalysisAI
Authentication bypass in the Firebase Authentication WordPress plugin (all versions before 1.7.1) permits unauthenticated remote attackers to impersonate any WordPress account - including administrators - by presenting an unverified Firebase JWT whose email claim matches a WordPress user. The plugin fails to check the email_verified field before binding the Firebase identity to a WordPress session, enabling account takeover without knowledge of the target's password. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target WordPress site has the Firebase Authentication plugin installed and active in a version prior to 1.7.1, and that at least one WordPress user account has an email address the attacker can discover or enumerate (via public author pages, WHOIS, contact forms, or directory brute-forcing). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) scores 8.1 (High), reflecting network-reachable unauthenticated exploitation with full CIA impact, tempered by AC:H - the attacker must successfully obtain or mint a Firebase JWT containing the target user's email without prior verification, which requires some setup (e.g., registering on Firebase before the target does, or using a separate Firebase project). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker enumerates a WordPress administrator's email address from a public profile or contact page, then registers a new Firebase account using that email address without completing email verification, obtaining a valid Firebase JWT. The attacker submits this token to the WordPress site's Firebase auth callback endpoint; the unpatched plugin extracts the email claim, locates the matching WordPress admin account, and issues a fully authenticated WordPress session - granting the attacker unrestricted administrative access to the site. |
| Remediation | Update the Firebase Authentication WordPress plugin to version 1.7.1 or later, which enforces email verification status on the Firebase JWT before matching it to a WordPress account. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all WordPress installations to identify those running the Firebase Authentication plugin and document installed versions. …
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Same weakness CWE-287 – Improper Authentication
View allSame technique Authentication Bypass
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External POC / Exploit Code
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