Cross-site scripting (XSS) vulnerability in the quiz_question_tostring function in mod/quiz/editlib.php in Moodle through 2.3.11, 2.4.x before 2.4.9, 2.5.x before 2.5.5, and 2.6.x before 2.6.2 allows remote authenticated users to inject arbitrary web script or HTML via a quiz question.
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-43690
openwall.com/lists/oss-security/2014/03/17/1
github.com/moodle/moodle
github.com/moodle/moodle/commit/217d839ded7026ed1b1280e1c296bc80a4036023
github.com/moodle/moodle/commit/5da73345fdd46cef912b229b2cfae2a26e36efd8
github.com/moodle/moodle/commit/7051f3a8828665f4fab37c8db91322fec85a64db
github.com/moodle/moodle/commit/fd4b7f57399bed85db0d4066ba12c2633ce87ba3
moodle.org/mod/forum/discuss.php?d=256416
nvd.nist.gov/vuln/detail/CVE-2014-2571