Security advisory for Kayako 4.57.1

Security advisory for Kayako 4.57.1. Kayako 4.57.1 has been released to address a critical security vulnerability that affects all versions of Kayako 4 up to and including 4.57. Kayako discovered the vulnerability July 15th and was able to publish a fix on July 16th. Further details are available at http://blog.kayako.com/security-advisory-kayako-4-57-1/