Description
All previously released versions of Sprockets (4.0.0.beta7 and lower, 3.7.1 and lower, 2.12.4 and lower), the software that powers the Rails asset pipeline, contain a directory traversal vulnerability.
Remediation
All users running an affected release should either upgrade or use one of the work arounds immediately.
References
Rails Asset Pipeline Directory Traversal Vulnerability (CVE-2018-3760)