Open redirect vulnerability in the Calendar set page in Moodle 2.1.x before 2.1.3 allows remote authenticated users to redirect users to arbitrary web sites and conduct phishing attacks via a redirection URL.
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-28720&sr=1
moodle.org/mod/forum/discuss.php?d=191748
bugzilla.redhat.com/show_bug.cgi?id=761248
github.com/moodle/moodle
github.com/moodle/moodle/commit/0d2672748c00181d9cdae2aabbab916cbd64c47d
github.com/moodle/moodle/commit/21e7d4c5fc9cc5df54c9c7d82190f1339d163a9e
github.com/moodle/moodle/commit/7f422374c101dcb0affdd5127b855671af4f3748
github.com/moodle/moodle/commit/eb59a448f7879d69b21fcde7f1fcddd69655e045
nvd.nist.gov/vuln/detail/CVE-2011-4582