CPANSA-Crypt-PBKDF2-2026-9641: Crypt-PBKDF2 vulnerability
| Publisher | giterlizzi | Document category | csaf_security_advisory |
|---|---|---|---|
| Initial release date | 2026-06-12T00:00:00 | Engine | CSAF Perl Toolkit 0.26 |
| Current release date | 2026-06-12T00:00:00 | Build Date | |
| Current version | 1 | Status | final |
| CVSS v3.1 Base Score | 5.3 | Severity | |
| Original language | Language | en | |
| Also referred to | |||
Vulnerability 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.
Vulnerabilities
CVE-2026-9641
Vulnerability DescriptionCrypt::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.
| Weakness | CWE-916 : Use of Password Hash With Insufficient Computational Effort |
|---|
Product status
Known affected
| Product | Score | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Crypt-PBKDF2 less than 0.261630 |
|
Fixed
- Crypt-PBKDF2 greater than or equal 0.261630
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA-Crypt-PBKDF2-2026-9641 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-crypt-pbkdf2-2026-9641.json - https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#pbkdf2 external
https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#pbkdf2 - https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes external
https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changes - http://www.openwall.com/lists/oss-security/2026/06/12/5 external
http://www.openwall.com/lists/oss-security/2026/06/12/5 - http://www.openwall.com/lists/oss-security/2026/06/13/1 external
http://www.openwall.com/lists/oss-security/2026/06/13/1 - http://www.openwall.com/lists/oss-security/2026/06/14/1 external
http://www.openwall.com/lists/oss-security/2026/06/14/1 - http://www.openwall.com/lists/oss-security/2026/06/14/2 external
http://www.openwall.com/lists/oss-security/2026/06/14/2 - http://www.openwall.com/lists/oss-security/2026/06/14/3 external
http://www.openwall.com/lists/oss-security/2026/06/14/3 - CVE-2026-9641 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-9641
Revision history
| Version | Date of the revision | Summary of the revision |
|---|---|---|
| 1 | Fri Jun 12 00:00:00 2026 | First release |
Sharing rules
TLP:WHITE
For the TLP version see: https://www.first.org/tlp/