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CVE-2026-9641 Affecting perl-Crypt-PBKDF2 package, versions <0:0.261630-1.amzn2023.0.1

Severity

 Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.29% (19th percentile)

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  • Snyk IDSNYK-AMZN2023-PERLCRYPTPBKDF2-17418376
  • published23 Jun 2026
  • disclosed12 Jun 2026
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Introduced: 12 Jun 2026

CVE-2026-9641  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 perl-Crypt-PBKDF2 to version 0:0.261630-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-1891.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perl-Crypt-PBKDF2 package and not the perl-Crypt-PBKDF2 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations.

The default algorithm is HMAC-SHA1, which should only be used for legacy systems.

These versions default to using 1000 iterations.

Depending on the chosen algorithm, 220,000 to 1,400,000 iterations should be used.