VulnerabilityDeferred
CVE-2026-9641
Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations.
MEDIUM 5.3EPSS 0.23%
Does this matter?
Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.
Description
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
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.23% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-916
- Source
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.