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 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.
BIT-kyverno-2026-100706
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:BIT-kyverno-2026-100706
kyverno
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.19.1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.19.1"
}
]
}
],
"package": {
"name": "kyverno",
"purl": "pkg:bitnami/kyverno",
"ecosystem": "Bitnami"
},
"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"
}
],
"database_specific": {
"source": "https://github.com/bitnami/vulndb/tree/main/data/kyverno/BIT-kyverno-2026-100706.json"
}
}
]- Related CVEs
- CVE-2026-100706
Source reference:
/aliases
Publisher severity
critical
Source reference: /database_specific/severity
- Event
- #59618 · Revision 1
- Added to Heist Feed
- Publisher date