CVE-2026-6656

Summary

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.

Affected Software

Weaknesses

• CWE-208: CWE-208 Observable Timing Discrepancy

Workarounds

This module has not been updated since 2012.

Users should migrate to an alternative solution.

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2026/07/20/4

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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