Authen::TOTP versions before 0.1.1 for Perl generate secrets using rand.
Secrets were generated using Perl's built-in rand function, which is predictable and unsuitable for security usage.
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