CVE-2016-3693: The Safemode gem before 1.2.4 for Ruby, when initialized with a delegate object that is a Rails controller,...

Security readout for executives and security teams

CVE-2016-3693 is an information disclosure issue in the Ruby Safemode gem before 1.2.4. In certain Rails controller-backed template contexts, attackers could use object inspection behavior to expose sensitive application information. The source bundle links this to Foreman template handling, but does not provide CVSS scoring or active exploitation evidence. Exposure is most likely in Ruby/Rails applications using Safemode before 1.2.4 with Rails controller delegate objects. Foreman deployments, downstream packages, or plugins using the affected template behavior should be reviewed first. The bundle does not enumerate complete affected product versions. Treat this as a targeted information disclosure risk, not an emergency without additional exposure evidence. Prioritize systems where untrusted or semi-trusted users can create or influence templates, especially Foreman or Rails applications using older Safemode versions. Mitigation focus: Upgrade Safemode to version 1.2.4 or later where used.; Apply Foreman or downstream vendor updates relevant to CVE-2016-3693.; Review Red Hat advisory RHSA-2018:0336 if using packaged Foreman components..

Prepared

Jun 13, 2026, 14:22 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.