Auth bypass in Kyverno
CVE-2026-124441
Kyverno before 1.19.2 contains an authorization bypass vulnerability that allows namespaced tenants to generate any resource kind in any namespace by templating the generate rule's kind and namespace with variables. Attackers can create a Policy and trigger ConfigMap in their own namespace, causing the privileged background-controller to write NetworkPolicies or RoleBindings into victim or kube-system namespaces.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
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
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-vjfx-fp68-rh4v) (vendor-advisory)
- VulnCheck Advisory: Kyverno before 1.19.2 Authorization Bypass via Variable Generate Target Kind (third-party-advisory)
Frequently asked questions
- What is CVE-2026-124441?
- CVE-2026-124441 is a high-severity vulnerability in Kyverno, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-11-08.
- How severe is CVE-2026-124441?
- High severity. CVSS v3 base score is 8.8 out of 10.