What’s Vulnerable › Vulnerabilities

CVE-2026-6656: Crypt::Password versions through 0.28 for Perl are susceptible to timing attacks

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-20 · updated 2026-10-24
• Weakness: CWE-208

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.

Affected products

• DRSTEVE Crypt::Password: through 0.28

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

Get alerted when CVE-2026-6656 or the next vulnerability affects your stack