Vulnerabilities
Vulnerable Software

Vulnerability Details 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 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 5.9%
CVSS Severity
CVSS v3 Score 8.1
Products affected by CVE-2026-41323


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