gianpaolo.cipicchia on "W3 Total Cache critical Vulnerability disclosed"

Hello,
there is a new critical vulnerability affecting object cache.
I disabled this feature because some attacker executed malicious code through this component. Do you have some suggestion ? I also noticed that if I use some security plugins suggestion in folder permissions, W3 Total Cache doesn't work as expected. For example also if my .htaccess contains all page cache directives, with 604 permission I got this error: It appears Page Cache URL rewriting is not working. If using apache, verify that the server configuration allows .htaccess or if using nginx verify all configuration files are included in the configuration.
Any help is appreciated !
Best Regards
Gian Paolo