Data::Entropy for Perl 0.007 and earlier use the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.
Exploitability
AV:LAC:LPR:NUI:NScope
S:UImpact
C:HI:HA:N7.7/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N