What’s Vulnerable › Vulnerabilities

CVE-2026-6659: Crypt::PasswdMD5 versions through 1.42 for Perl generates insecure random values for salts

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-08 · updated 2026-10-26
• Weakness: CWE-338

Description

Crypt::PasswdMD5 versions through 1.42 for Perl generates insecure random values for salts. The built-in rand function is predictable, and unsuitable for cryptography.

Affected products

• RSAVAGE Crypt::PasswdMD5: through 1.42

References

• https://github.com/ronsavage/Crypt-PasswdMD5/commit/a2f821637db0296082297aa4b02254ab08f0dc5e.patch
• https://github.com/ronsavage/Crypt-PasswdMD5/pull/3
• https://metacpan.org/release/RSAVAGE/Crypt-PasswdMD5-1.42/source/lib/Crypt/PasswdMD5.pm#L35-47
• https://metacpan.org/release/RSAVAGE/Crypt-PasswdMD5-1.43/changes
• http://www.openwall.com/lists/oss-security/2026/05/08/17

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