Cross-site scripting (XSS) vulnerability in document/rqmkhtml.php in Claroline 1.7.4 and earlier allows remote attackers to read arbitrary files via ".." sequences in the file parameter in a rqEditHtml command.
https://www.exploit-db.com/exploits/1627
https://exchange.xforce.ibmcloud.com/vulnerabilities/25562
https://euvd.enisa.europa.eu/vulnerability/EUVD-2006-1596
http://www.vupen.com/english/advisories/2006/1187
http://www.securityfocus.com/bid/17344
http://secunia.com/advisories/19461
http://retrogod.altervista.org/claroline_174_incl_xpl.html
http://archives.neohapsis.com/archives/fulldisclosure/2006-03/1905.html