dev/less.php in Family Connections CMS (FCMS) 2.5.0 - 2.7.1, when register_globals is enabled, allows remote attackers to execute arbitrary commands via shell metacharacters in the argv[1] parameter.
https://www.familycms.com/blog/2011/11/security-vulnerability-fcms-2-5-2-7-1/
https://exchange.xforce.ibmcloud.com/vulnerabilities/71618