Python Vulnerability - CVE-2019-16056

An issue was discovered in Python through 2.7.16 3.x through 3.5.7 3.6.x through 3.6.9 and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340 however this CVE applies to Python more generally.