CVE-2020-5899: F5 Nginx Controller

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

In NGINX Controller 3.0.0-3.4.0, recovery code required to change a user's password is transmitted and stored in the database in plain text, which allows an attacker who can intercept the database connection or have read access to the database, to request a password reset using the email address of another registered user then retrieve the recovery code.

Affected products

• F5 Nginx Controller: from 3.0.0, up to and including 3.4.0

Published 2020-07-01. Last modified 2026-06-17.