In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.
{ "binaries": [ { "binary_version": "2.11.1-2ubuntu0.1~esm1", "binary_name": "php-horde-core" } ] }
{ "binaries": [ { "binary_version": "5.2.9+debian0-1build1", "binary_name": "php-horde" } ] }
{ "binaries": [ { "binary_version": "2.22.6+debian0-1ubuntu1", "binary_name": "php-horde-core" } ] }
{ "binaries": [ { "binary_version": "5.2.17+debian0-1", "binary_name": "php-horde" } ] }
{ "binaries": [ { "binary_version": "2.31.1+debian0-1ubuntu1", "binary_name": "php-horde-core" } ] }