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Message-ID: <70d8130a-2ef3-49a3-943b-7d34e91b829c@cpansec.org>
Date: Fri, 12 Jun 2026 15:43:21 +0100
From: Robert Rothenberg <rrwo@...nsec.org>
To: cve-announce@...urity.metacpan.org, oss-security@...ts.openwall.com
Subject: CVE-2026-9638: Crypt::PBKDF2 versions before 0.261630 for Perl
generate insecure random values for salts
========================================================================
CVE-2026-9638 CPAN Security Group
========================================================================
CVE ID: CVE-2026-9638
Distribution: Crypt-PBKDF2
Versions: before 0.261630
MetaCPAN: https://metacpan.org/dist/Crypt-PBKDF2
VCS Repo: https://github.com/arodland/Crypt-PBKDF2
Crypt::PBKDF2 versions before 0.261630 for Perl generate insecure
random values for salts
Description
-----------
Crypt::PBKDF2 versions before 0.261630 for Perl generate insecure
random values for salts.
These versions use the built-in rand function, which is predictable and
unsuitable for cryptography.
Problem types
-------------
- CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator
(PRNG)
Solutions
---------
Upgrade to version 0.261630 or later.
References
----------
https://metacpan.org/dist/Crypt-PBKDF2/source/lib/Crypt/PBKDF2.pm#L86-93
https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes
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