SQL injection vulnerability in blog/index.php in the blog module in Moodle 1.6.2 allows remote attackers to execute arbitrary SQL commands via a double-encoded tag parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/29377
http://www.vupen.com/english/advisories/2006/3957
http://www.securityfocus.com/archive/1/448023/100/0/threaded
http://www.securityfocus.com/archive/1/448018/100/0/threaded
http://securityreason.com/securityalert/1699
http://secunia.com/advisories/22309
http://marc.info/?l=full-disclosure&m=116034301209228&w=2
http://cvs.moodle.com/blog/index.php?r1=1.18.2.2&r2=1.18.2.3