CVE-2026-8647: Mik Crypt::scryptkdf

Medium severity, CVSS 4.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Crypt::ScryptKDF versions through 0.010 for Perl uses insecure random number source when no CSPRNG module is available. The random_bytes function fell back to using the built-in rand() function when none of the Perl modules Crypt::PRNG, Crypt::OpenSSL::Random, Net::SSLeay, Crypt::Random, or Bytes::Random::Secure were available.

Affected products

• Mik Crypt::scryptkdf: up to and including 0.010

Published 2026-05-26. Last modified 2026-07-23.