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.
Published: 2026-10-30
Score: n/a
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade to CallBackery 0.62.0 or later.

Tracking

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Advisories

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History

Fri, 30 Oct 2026 13:15:00 +0000

Type Values Removed Values Added
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.
Title CallBackery versions before 0.62.0 for Perl store user passwords as unsalted HMAC-SHA1 hashes
Weaknesses CWE-759
CWE-916
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-10-30T13:09:47.702Z

Reserved: 2026-06-28T20:49:43.680Z

Link: CVE-2026-13576

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-30T13:18:32.900

Modified: 2026-10-30T17:08:54.633

Link: CVE-2026-13576

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T15:00:15Z

Weaknesses
  • CWE-759

    Use of a One-Way Hash without a Salt

  • CWE-916

    Use of Password Hash With Insufficient Computational Effort