CVE-2026-6656

Crypt::Password versions through 0.28 for Perl are susceptible to timing attacks

State: Published
Severity: 7.5 High
Published: Jul 20, 2026
Updated: Jul 20, 2026
Reserved: Apr 20, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-208 Observable Timing Discrepancy

Affected Products

Product	Versions
Crypt::PasswordDRSTEVE	0.28 and earlierAffected

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=180162issue-tracking
http://www.openwall.com/lists/oss-security/2026/07/20/4

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