CPANSA-CallBackery-2026-13576: CallBackery vulnerability
| Publisher | giterlizzi | Document category | csaf_security_advisory |
|---|---|---|---|
| Initial release date | 2026-10-30T00:00:00 | Engine | CSAF Perl Toolkit 0.26 |
| Current release date | 2026-10-30T00:00:00 | Build Date | |
| Current version | 1 | Status | final |
| CVSS v3.1 Base Score | Severity | ||
| Original language | Language | en | |
| Also referred to | |||
Vulnerability Description
CallBackery versions before 0.62.0 for Perl store user passwords as unsalted HMAC-SHA1 hashes.
Passwords are hashed with hmac_sha1_sum() from Mojo::Util with no key, a single fast SHA-1 HMAC. There is no salt, so equal passwords give equal hashes, and no work factor slows down guessing.
An attacker who obtains the user table can recover passwords by fast offline guessing.
Vulnerabilities
CVE-2026-13576
Vulnerability DescriptionCallBackery versions before 0.62.0 for Perl store user passwords as unsalted HMAC-SHA1 hashes.
Passwords are hashed with hmac_sha1_sum() from Mojo::Util with no key, a single fast SHA-1 HMAC. There is no salt, so equal passwords give equal hashes, and no work factor slows down guessing.
An attacker who obtains the user table can recover passwords by fast offline guessing.
| Weakness | CWE-759 : Use of a One-Way Hash without a Salt |
|---|
Product status
Known affected
| Product | Score | ||||
|---|---|---|---|---|---|
| CallBackery less than 0.62.0 |
|
Fixed
- CallBackery greater than or equal 0.62.0
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA-CallBackery-2026-13576 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-callbackery-2026-13576.json - https://metacpan.org/release/OETIKER/CallBackery-0.62.0/changes external
https://metacpan.org/release/OETIKER/CallBackery-0.62.0/changes - CVE-2026-13576 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-13576
Revision history
| Version | Date of the revision | Summary of the revision |
|---|---|---|
| 1 | Fri Oct 30 00:00:00 2026 | First release |
Sharing rules
TLP:WHITE
For the TLP version see: https://www.first.org/tlp/