CVE-2026-13576

INFO Priority: 0.00 BB Relevance: 0/100
Published: 2026-10-30 Modified: 2026-10-30 First seen: 2026-10-30 Status: pending_score

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.

Weakness Classification (2)

Affected Software (1)

VendorProductVersion
&mdash; &mdash; 0 < 0.62.0

Bug Bounty Relevance

0 / 100

CVSS Score

Unscored

EPSS — Exploitation Probability

0.10%
Raw Score 0.001040
Percentile 1.0%
Date 2026-10-31

Intelligence Sources

mitre ref →
nvd ref →