Multiple cross-site scripting (XSS) vulnerabilities in the Web Calendar in SOGo before 2.2.0 allow remote attackers to inject arbitrary web script or HTML via the (1) title of an appointment or (2) contact fields.
https://sogo.nu/bugs/view.php?id=2598
https://github.com/inverse-inc/sogo/commit/c94595ea7f0f843c2d7abf25df039b2bbe707625
https://github.com/inverse-inc/sogo/commit/80a09407652ec04e8c9fb6cb48e1029e69a15765
https://github.com/inverse-inc/sogo/commit/3a5e44e7eb8b390b67a8f8a83030b49606956501
https://github.com/inverse-inc/sogo/commit/1a7fc2a0e90a19dfb1fce292ae5ff53aa513ade9