Developer credits
Git commits in Moodle 2.5.9 by Andreas Grabs
commit 7bb6b84cfd308bad89dc0c3f95ad2fa55b7d25f8 Author: Andreas Grabs <moodle@grabs-edv.de> Date: Mon, 27 Oct 2014 03:37:52 +0800 Tag: v2.5.9 MDL-47865 mod_feedback - XSS through $searchstring in mod/feedback/mapcourse.php