CVE-2017-20240

Medium

Description

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.

SeverityMedium

CVSS5.9

Exploit probability—

ProductCrypt::PBKDF2

PublishedJun 12, 2026

First seenJun 12, 2026

Weakness typeCWE-208CWE-208

How to fix

Update

ARODLAND Crypt::PBKDF20.261630 or later

Vendor advisories

metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes

Affected products

Product	Affected versions	Fixed in
ARODLAND Crypt::PBKDF2	v < 0.261630	0.261630

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