A persistent XSS issue was discovered in app/View/Helper/CommandHelper.php in MISP before 2.4.107. JavaScript can be included in the discussion interface, and can be triggered by clicking on the link.
An issue was discovered in app/View/Elements/Events/View/value_field.ctp in MISP before 2.4.107. There is persistent XSS via link type attributes with javascript:// links.
An issue was discovered in app/webroot/js/misp.js in MISP before 2.4.107. There is persistent XSS via image names in titles, as demonstrated by a screenshot.
An issue was discovered in MISP 2.4.9x before 2.4.99. In app/Model/Event.php (the STIX 1 import code), an unescaped filename string is used to construct a shell command. This vulnerability can be abused by a malicious authenticated user to execute arbitrary commands by tweaking the original filename of the STIX import.