CVE-2026-100706 — kyverno before 1.19.1 Privilege Escalation via Policy apiCall urlPath
kyverno before 1.19.1 fails to properly validate URL-encoded path segments in Policy apiCall urlPath, allowing namespace tenants to bypass the per-namespace clamp and create obj…
Published: 2026-09-26 · CVSS: 9.4 · CVSS 4.0
kyverno before 1.19.1 fails to properly validate URL-encoded path segments in Policy apiCall urlPath, allowing namespace tenants to bypass the per-namespace clamp and create objects in other namespaces as the admission-controller ServiceAccount. Attackers can exploit this by using percent-encoded directory traversal sequences to create MutatingWebhookConfiguration objects cluster-wide or PolicyException objects in the kyverno namespace, enabling privilege escalation to cluster admin.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7