Auth bypass in Progress Software Chef Automate

CVE-2026-80462

A vulnerability in the Chef Automate API gateway and identity validation path may allow an unauthenticated actor to gain elevated access to protected Chef Automate functionality under specific conditions.

Vulnerability class: Broken Authentication

Published · last modified .

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.020 (80.7th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-80462: rose from 0.005 to 0.020.

EPSS over last 30 days · oldest: 0.005 · newest: 0.020 · change: +0.015

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-80462?
CVE-2026-80462 is a critical-severity vulnerability in Progress Software Chef Automate, classified under Missing Authentication for Critical Function. CVSS score: 10.0/10. Published 2026-09-11.
How severe is CVE-2026-80462?
Critical severity. CVSS v3 base score is 10.0 out of 10.