CVE-2026-13576

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.

Related Weaknesses (CWE)

CWE-759 CWE-916

References

https://metacpan.org/release/OETIKER/CallBackery-0.62.0/changes

FAQ

What is CVE-2026-13576?

CVE-2026-13576 is a documented vulnerability. 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 i...

How severe is CVE-2026-13576?

CVSS scoring is not yet available for CVE-2026-13576. Check NVD for updates.

Is there a patch for CVE-2026-13576?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.