What is CVE-2026-122307?

CVE-2026-122307 is a high-severity vulnerability in Kyverno, classified under Incorrect Authorization. CVSS score: 7.7/10. Published 2026-11-05.

How severe is CVE-2026-122307?

High severity. CVSS v3 base score is 7.7 out of 10.

Auth bypass in Kyverno

CVE-2026-122307

Kyverno before 1.19.2 contains a policy bypass vulnerability in the admissionpolicygenerator controller, which folds PolicyExceptions into generated ValidatingAdmissionPolicies while ignoring the --enablePolicyException, --exceptionNamespace, and policy kind gates. Users with namespaced create rights on PolicyExceptions can inject negated matchConditions into the generated policies to admit violating resources, bypassing cluster-wide enforcement.

Vulnerability class: Broken Access Control

Published 2026-11-05 · last modified 2026-11-05.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Kyverno

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

GitHub Security Advisory (GHSA-qc9c-3fgf-cgq8) (vendor-advisory)
VulnCheck Advisory: Kyverno before 1.19.2 Policy Bypass via admissionpolicygenerator PolicyException Handling (third-party-advisory)

Frequently asked questions

What is CVE-2026-122307?: CVE-2026-122307 is a high-severity vulnerability in Kyverno, classified under Incorrect Authorization. CVSS score: 7.7/10. Published 2026-11-05.
How severe is CVE-2026-122307?: High severity. CVSS v3 base score is 7.7 out of 10.