An issue was discovered in app/Model/SharingGroupServer.php in MISP 2.4.139. In the implementation of Sharing Groups, the "all org" flag sometimes provided view access to unintended actors.
An issue was discovered in MISP before 2.4.132. It can perform an unwanted action because of a POST operation on a form that is not linked to the login page.
app/Model/feed.php in MISP before 2.4.124 allows administrators to choose arbitrary files that should be ingested by MISP. This does not cause a leak of the full contents of a file, but does cause a leaks of strings that match certain patterns. Among the data that can leak are passwords from database.php or GPG key passphrases from config.php.
An issue was discovered in MISP before 2.4.121. It mishandled time skew (between the machine hosting the web server and the machine hosting the database) when trying to block a brute-force series of invalid requests.