Description

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.

Affected versions

You are affected if you meet the following preconditions:

• Applications using 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.

References

Insufficient Entropy in Cookie Encryption in Auth0 WordPress Plugin