The Mail gem before 2
The Mail gem before 2.4.3 for Ruby allows remote attackers to execute arbitrary commands via shell metacharacters in a (1) sendmail or (2) exim delivery.
Exploitability
AV:N
AC:L
Au:N
Impact
C:P
I:P
A:P
7.5/AV:N/AC:L/Au:N/C:P/I:P/A:P