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Message-ID: <1a51664d-3a49-4617-a13e-deecfa54aeab@cpansec.org>
Date: Mon, 20 Jul 2026 08:05:20 +0100
From: Robert Rothenberg <rrwo@...nsec.org>
To: cve-announce@...urity.metacpan.org, oss-security@...ts.openwall.com
Subject: CVE-2026-6656: Crypt::Password versions through 0.28 for Perl are
susceptible to timing attacks
========================================================================
CVE-2026-6656 CPAN Security Group
========================================================================
CVE ID: CVE-2026-6656
Distribution: Crypt-Password
Versions: through 0.28
MetaCPAN: https://metacpan.org/dist/Crypt-Password
Crypt::Password versions through 0.28 for Perl are susceptible to
timing attacks
Description
-----------
Crypt::Password versions through 0.28 for Perl are susceptible to
timing attacks.
The check_password method uses the built-in eq operator. This allows
discrepancies in timing to be used to guess the underlying hash.
Problem types
-------------
- CWE-208 Observable Timing Discrepancy
Workarounds
-----------
This module has not been updated since 2012.
Users should migrate to an alternative solution.
References
----------
https://metacpan.org/release/DRSTEVE/Crypt-Password-0.28/source/lib/Crypt/Password.pm#L190-193
https://rt.cpan.org/Ticket/Display.html?id=180162
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