CVE-2026-100706
9.9 CRITICALpublic exploit availablePublished 2026-09-26 · Updated 2026-09-28
AI risk analysis
- Summary
- The flaw allows namespace tenants to bypass per-namespace restrictions and create objects in other namespaces, leading to potential privilege escalation to cluster admin.
- Exploitability
- Exploitation is relatively straightforward given the ability to use percent-encoded directory traversal sequences, requiring attackers to have access to the affected kyverno version.
- Blast radius
- If exploited, the impact could be severe, as it allows attackers to create cluster-wide objects, significantly increasing the attack surface.
- Detection
- No reliable host or network indicator is derivable from the published description.
- Prioritized remediation
- Upgrade to kyverno 1.19.1 or later.
Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.
NVD 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-441
Public exploit & PoC references
All references
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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