Crypt::PasswdMD5 versions through 1.42 for Perl generates insecure random values for salts.
The built-in rand function is predictable, and unsuitable for cryptography.
Exploitability
AV:NAC:LPR:NUI:NScope
S:UImpact
C:HI:NA:N7.5/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NOther