CPANSA-Crypt-Password-2026-6656: Crypt-Password vulnerability
| Publisher | giterlizzi | Document category | csaf_security_advisory |
|---|---|---|---|
| Initial release date | 2026-07-20T00:00:00 | Engine | CSAF Perl Toolkit 0.26 |
| Current release date | 2026-07-20T00:00:00 | Build Date | |
| Current version | 1 | Status | final |
| CVSS v3.1 Base Score | 7.5 | Severity | High |
| Original language | Language | en | |
| Also referred to | |||
Vulnerability Description
Crypt::Password versions through 0.28 for Perl are susceptible to timing attacks.
The check_password method uses the built-in eq operator. This allows discrepancies in timing to be used to guess the underlying hash.
Vulnerabilities
CVE-2026-6656
Vulnerability DescriptionCrypt::Password versions through 0.28 for Perl are susceptible to timing attacks.
The check_password method uses the built-in eq operator. This allows discrepancies in timing to be used to guess the underlying hash.
| Weakness | CWE-208 : Observable Timing Discrepancy |
|---|
Product status
Known affected
| Product | Score | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Crypt-Password greater than 0 |
|
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA-Crypt-Password-2026-6656 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-crypt-password-2026-6656.json - https://metacpan.org/release/DRSTEVE/Crypt-Password-0.28/source/lib/Crypt/Password.pm#L190-193 external
https://metacpan.org/release/DRSTEVE/Crypt-Password-0.28/source/lib/Crypt/Password.pm#L190-193 - https://rt.cpan.org/Ticket/Display.html?id=180162 external
https://rt.cpan.org/Ticket/Display.html?id=180162 - http://www.openwall.com/lists/oss-security/2026/07/20/4 external
http://www.openwall.com/lists/oss-security/2026/07/20/4 - CVE-2026-6656 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-6656
Revision history
| Version | Date of the revision | Summary of the revision |
|---|---|---|
| 1 | Mon Jul 20 00:00:00 2026 | First release |
Sharing rules
TLP:WHITE
For the TLP version see: https://www.first.org/tlp/