CVE-2026-9641

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.

Score

CVSS 3.1 5.3 Medium

Status

Deferred - 9b29abf9-4ab0-4765-b253-1875cd9b441e

Published

2026-06-12

Last modified

2026-10-26

Weaknesses

CWE-916

Affected products

• Cryptpbkdf2 (Arodland)

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