CVE-2017-20240: Arodland crypt::pbkdf2

Medium severity, CVSS 5.9. EPSS: 0.3% chance of exploitation in the next 30 days.

Crypt::PBKDF2 versions before 0.261630 for Perl are vulnerable to timing attacks. These versions use Perl's built-in eq comparison. Discrepancies in timing could be used to guess the underlying derived-key.

Affected products

• Arodland crypt::pbkdf2: before 0.261630 (fixed in 0.261630)

Published 2026-06-12. Last modified 2026-06-17.