In previous versions of Puppet Agent it was possible to install a module with world writable permissions. Puppet Agent 5.3.4 and 1.10.10 included a fix to this vulnerability.
In previous versions of Puppet Agent it was possible for the agent to retrieve facts from an environment that it was not classified to retrieve from. This was resolved in Puppet Agent 5.3.4, included in Puppet Enterprise 2017.3.4
In Puppet Enterprise 2017.1.x and 2017.2.1, using specially formatted strings with certain formatting characters as Classifier node group names or RBAC role display names causes errors, effectively causing a DOS to the service. This was resolved in Puppet Enterprise 2017.2.2.
Nginx versions since 0.5.6 up to and including 1.13.2 are vulnerable to integer overflow vulnerability in nginx range filter module resulting into leak of potentially sensitive information triggered by specially crafted request.