The set_version script as shipped with obs-service-set_version is a source validator for the Open Build Service (OBS). In versions prior to 0.5.3-1.1 this script did not properly sanitize the input provided by the user, allowing for code execution on the executing server.
https://www.suse.com/de-de/security/cve/CVE-2014-0593/
https://lists.opensuse.org/opensuse-buildservice/2014-03/msg00014.html
https://github.com/openSUSE/obs-service-set_version/commit/10d5bddcea29f74a175f7f550924bf6407e52e93