CVE-2026-6656

EUVD-2026-45894
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 40.4%
Debian logo
Debian Releases
Debian Product
Codename
libcrypt-password-perl
forky
vulnerable
sid
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libcrypt-password-perl
jammy
dne
noble
dne
resolute
needs-triage
Common Weakness Enumeration
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
http://www.openwall.com/lists/oss-security/2026/07/20/4