CVE-2026-9641

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

CVSS 5.3 MEDIUMEPSS 0.2%CWE-916

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

12 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

ARODLAND · Crypt::PBKDF2

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References

https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#pbkdf2 https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes http://www.openwall.com/lists/oss-security/2026/06/12/5 http://www.openwall.com/lists/oss-security/2026/06/13/1 http://www.openwall.com/lists/oss-security/2026/06/14/1 http://www.openwall.com/lists/oss-security/2026/06/14/2 http://www.openwall.com/lists/oss-security/2026/06/14/3