Services/Feeds/classes/class.ilExternalFeedItem.php in ILIAS 5.1.x, 5.2.x, and 5.3.x before 5.3.5 has XSS via a link attribute.Referenceshttps://www.ilias.de/docu/goto.php?target=st_229https://github.com/ILIAS-eLearning/ILIAS/commit/ff9bf29858f2dbffe828711a6f8bf37038c00d77