phpgwapi/js/fckeditor/editor/dialog/fck_spellerpages/spellerpages/serverscripts/spellchecker.php in EGroupware 1.4.001+.002; 1.6.001+.002 and possibly other versions before 1.6.003; and EPL 9.1 before 9.1.20100309 and 9.2 before 9.2.20100309; allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) aspell_path or (2) spellchecker_lang parameters.
http://www.openwall.com/lists/oss-security/2010/09/21/7
http://www.exploit-db.com/exploits/11777/