Vulnerability record · CVE-2026-9638 · published 12 June 2026

CVE-2026-9638: Crypt::PBKDF2 versions before 0.261630 for Perl generate insecure random values for salts.

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.

7.5 CVSS 3.1 High EPSS 0.49% · top 60.2% CWE-338 · CWE-338 Deferred

7.5CVSS 3.1 base score

0.49%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

3References

17 Jun 2026Last modified by NVD

Description

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

References

Link	Tags
https://metacpan.org/dist/Crypt-PBKDF2/source/lib/Crypt/PBKDF2.pm#L86-93
https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes
http://www.openwall.com/lists/oss-security/2026/06/12/4

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Source: NIST National Vulnerability Database (record CVE-2026-9638), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.