CVE-2026-9638

Name	CVE-2026-9638
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1139867

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libcrypt-pbkdf2-perl (PTS)	bullseye	0.161520-1	vulnerable
	forky, bookworm, trixie	0.161520-2	vulnerable
	sid	0.261630-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libcrypt-pbkdf2-perl	source	(unstable)	0.261630-1			1139867

Notes

https://lists.security.metacpan.org/cve-announce/msg/40932643/
Fixed by: https://github.com/arodland/Crypt-PBKDF2/commit/1d0a1ad8474fd3dddfd10a04ea6837951f6e6519 (0.261630)