ALAS2023-2026-1891: perl-Crypt-PBKDF2 security update

ALAS2023-2026-1891, released June 22, 2026, fixes 3 CVEs in perl-Crypt-PBKDF2 (version 0.261630-1.amzn2023.0.1). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.5

Base score, 0 to 10

Highest EPSS

0.0032

25th percentile

Priority of the 3 CVEs

Patch now 0
                                Urgent 0
                                High 1
                                Routine 2

Fixed package versions

Product	Release	Fixed in
perl-Crypt-PBKDF2	amzn 2023	0.261630-1.amzn2023.0.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-9638	libcrypt-pbkdf2-perl: Crypt::PBKDF2 versions before 0.261630 for Perl generate insecure random values for salts	7.5	0.0031	None reported
Routine	CVE-2017-20240	libcrypt-pbkdf2-perl: Crypt::PBKDF2 versions before 0.261630 for Perl are vulnerable to timing attacks	5.9	0.0032	None reported
Routine	CVE-2026-9641	libcrypt-pbkdf2-perl: Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations	5.3	0.0023	None reported

Also fixes CVE-2026-9638

FEDORA-2026-E8231B773D
perl-Crypt-PBKDF2 on Fedora 43
DEBIAN-CVE-2026-9638
libcrypt-pbkdf2-perl on Debian 12.15 (bookworm), Debian 13.5 (trixie), Debian 14

Vendor advisory

https://alas.aws.amazon.com/AL2023/ALAS-2026-1891.html

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