CVE-2026-6659

HIGH
Published May 8, 2026 Modified May 12, 2026 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.

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CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0002
Probability of exploitation
0.03%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-338 CWE-338

References

Frequently Asked Questions

What is CVE-2026-6659? +
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. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-6659? +
CVE-2026-6659 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0002, placing it in the 0th percentile for exploitation probability.
How do I check if I'm vulnerable to CVE-2026-6659? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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