What is CVE-2026-9638?

CVE-2026-9638 is a high-severity vulnerability, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 7.5/10. Published 2026-06-12.

How severe is CVE-2026-9638?

High severity. CVSS v3 base score is 7.5 out of 10.

CVE-2026-9638

CVE-2026-9638

Crypt::PBKDF2 versions before 0.261630 for Perl generate insecure random values for salts. These versions use the built-in rand function, which is predictable and unsuitable for cryptography.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Weakness classification (CWE)

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

References

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9b29abf9-4ab0-4765-b253-1875cd9b441e
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Frequently asked questions

What is CVE-2026-9638?: CVE-2026-9638 is a high-severity vulnerability, classified under Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). CVSS score: 7.5/10. Published 2026-06-12.
How severe is CVE-2026-9638?: High severity. CVSS v3 base score is 7.5 out of 10.