Repository#grep accepts Unix pipes by default
See CVE-2013-4489 advisory for GitLab: Remote code execution vulnerability in the code search feature http://seclists.org/oss-sec/2013/q4/224
Advisories for Gem/Gitlab-Grit package
2014
See CVE-2013-4489 advisory for GitLab: Remote code execution vulnerability in the code search feature http://seclists.org/oss-sec/2013/q4/224