CVE-2026-76793: Unknown Firebase Authentication

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Unknown Firebase Authentication: before 1.7.1 (fixed in 1.7.1)

Published 2026-08-22. Last modified 2026-08-26.