system
Provide references for <CVE-2016-6639>.
user
Where can I find more information about <CVE-2016-6639>?
assistant
References are available at: https://github.com/cloudfoundry/php-buildpack/commit/e2db3ccd4812e0c0aba20720fc51789d981aba67, https://pivotal.io/security/cve-2016-6639.