Moodle 1.8 before 1.8.11 and 1.9 before 1.9.7 does not use a random password salt in config.php, which makes it easier for attackers to conduct brute-force password guessing attacks.
SQL injection vulnerability in the SCORM module in Moodle 1.8 before 1.8.11 and 1.9 before 1.9.7 allows remote authenticated users to execute arbitrary SQL commands via vectors related to an "escaping issue when processing AICC CRS file (Course_Title)."
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.
SQL injection vulnerability in ing/blocks/mrbs/code/web/view_entry.php in the MRBS plugin for Moodle allows remote attackers to execute arbitrary SQL commands via the id parameter.