CVE-2026-41323: Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.18.0-rc1, 1.17.2-rc1, and 1.16.4, Kyverno's apiCall…

PriorityP354critical9.1CVSS 3.1

AVNACLPRHUINSCCHIHAH

EPSS

0.56%

42.3th percentile

Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.18.0-rc1, 1.17.2-rc1, and 1.16.4, Kyverno's apiCall feature in ClusterPolicy automatically attaches the admission controller's ServiceAccount token to outgoing HTTP requests. The service URL has no validation — it can point anywhere, including attacker-controlled servers. Since the admission controller SA has permissions to patch webhook configurations, a stolen token leads to full cluster compromise. Versions 1.18.0-rc1, 1.17.2-rc1, and 1.16.4 patch the issue.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
kyverno	kyverno	< 1.16.4	1.16.4
kyverno	kyverno	—	—
kyverno	kyverno	>= 1.17.0 < 1.17.2	1.17.2

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