CVE-2020-13163: Em-Imap Project Em-Imap

High severity, CVSS 7.4. EPSS: 0.8% chance of exploitation in the next 30 days.

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.

Affected products

• Em-Imap Project Em-Imap: version 0.5 only

Published 2020-05-19. Last modified 2026-06-17.