CVE-2020-13163
em-imap 0.5 uses the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified.
Date published : 2020-05-19
https://github.com/ConradIrwin/em-imap/issues/25
https://securitylab.github.com/advisories/GHSL-2020-095-conradirwin-em-imap