CVE-2011-4305
message/refresh.php in Moodle 1.9.x before 1.9.14 allows remote authenticated users to cause a denial of service (infinite request loop) via a URL that specifies a zero wait time for message refreshing.
Date published : 2012-07-11
http://git.moodle.org/gw?p=moodle.git;a=commit;h=97f258fabb3ebfa7acc7c02cb59de92b01710f99