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CVE-2026-6659

Crypt::PasswdMD5: Perl: Crypt::PasswdMD5: Weak cryptographic salts due to predictable random number generation

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Severity

Moderate

Red Hat Product Security

6.1

CVSS 3.1

Review impact separately from score.

Published · May 9, 2026

Updated · September 1, 2026

Description

A flaw was found in Crypt::PasswdMD5 for Perl. This component generates insecure random values for cryptographic salts, which are used to strengthen password hashes. The built-in rand function, used for generating these salts, is predictable and not suitable for cryptographic purposes. This vulnerability could allow an attacker to more easily crack password hashes, potentially leading to unauthorized access or information disclosure.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

CVSS / CWE

CVSS 3.1 · 6.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

CWE-338 · Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)