{"id":"CVE-2026-100706","revision":"ef70e2a07bbf4031827c3a44d1b48584","records":[{"revision":"ef70e2a07bbf4031827c3a44d1b48584","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-100706","aliases":[],"title":"kyverno before 1.19.1 Privilege Escalation via Policy apiCall urlPath","description":"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.","state":0,"publishedAt":"2026-09-26T13:24:00.707+00:00","modifiedAt":"2026-09-26T23:08:54.549+00:00","affected":[{"ecosystem":"Vendor product","name":"kyverno","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"kyverno\",\n                    \"product\": \"kyverno\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/kyverno/kyverno\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"1.19.1\"\n                        },\n                        {\n                            \"version\": \"1.19.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","score":9.4,"severity":"CRITICAL"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9.9,"severity":"CRITICAL"}],"references":["https://github.com/kyverno/kyverno/security/advisories/GHSA-5qq8-67g6-4h2w","https://www.vulncheck.com/advisories/kyverno-before-1.19.1-privilege-escalation-via-policy-apicall-urlpath"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-100706","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-100706","identifiers":["CVE-2026-100706"]},"retained":false,"historicalAffected":[]}],"coverage":[]}