Auth0 WordPress Plugin has Insufficient Entropy in Cookie Encryption

Impact

In applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies.

Am I Affected?

Consumers are affected if their application meets the following preconditions:

• It is using the Auth0 WordPress Plugin, versions between 5.0.0-BETA0 and 5.5.0
• Auth0 WordPress plugin using the Auth0-PHP SDK versions between 8.0.0 to 8.18.0.

Resolution

Upgrade Auth0/wordpress to version 5.6.0 or greater.