{"id":"BIT-kyverno-2026-100706","summary":"kyverno before 1.19.1 Privilege Escalation via Policy apiCall urlPath","details":"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.","aliases":["CVE-2026-100706","GHSA-5qq8-67g6-4h2w"],"modified":"2026-10-01T10:10:51.481045536Z","published":"2026-10-01T09:26:27.308Z","database_specific":{"cpes":["cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:go:*:*"],"severity":"Critical"},"references":[{"type":"WEB","url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-5qq8-67g6-4h2w"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100706"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/kyverno-before-1.19.1-privilege-escalation-via-policy-apicall-urlpath"}],"affected":[{"package":{"name":"kyverno","ecosystem":"Bitnami","purl":"pkg:bitnami/kyverno"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.19.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/kyverno/BIT-kyverno-2026-100706.json"},"severity":[{"type":"CVSS_V4","score":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}],"schema_version":"1.9.0"}