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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-5899
• https://support.f5.com/csp/article/K25434422