CVE-2009-1171
The TeX filter in Moodle 1.6 before 1.6.9+, 1.7 before 1.7.7+, 1.8 before 1.8.9, and 1.9 before 1.9.5 allows user-assisted attackers to read arbitrary files via an input command in a "$$" sequence, which causes LaTeX to include the contents of the file.
Date published : 2009-03-30
http://www.securityfocus.com/bid/34278
http://www.securityfocus.com/archive/1/502231/100/0/threaded