---
title: "CVE-2026-100706: Kyverno - Broken Access Control"
description: "Kyverno < 1.19.1 contains a broken access control caused by improper validation of URL-encoded path segments in Policy apiCall urlPath, letting namespace tenants bypass namespace restrictions and escalate privileges to cluster admin, exploit requires namespace tenant privileges."
url: https://panop.io/threat-heartbeat/CVE-2026-100706/
---

# CVE-2026-100706 Kyverno - Broken Access Control

Kyverno < 1.19.1 contains a broken access control caused by improper validation of URL-encoded path segments in Policy apiCall urlPath, letting namespace tenants bypass namespace restrictions and escalate privileges to cluster admin, exploit requires namespace tenant privileges.

CVSS base score 9.9 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.61% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-100706)

## Details

Type

Broken Access Control

Impact

Privilege Escalation, Broken Access Control

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Published

26 September 2026

Updated

15 October 2026

Weakness

[CWE-441](https://cwe.mitre.org/data/definitions/441.html)

## Vendor fix

Update to version 1.19.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-100706](https://nvd.nist.gov/vuln/detail/CVE-2026-100706)
- [https://github.com/kyverno/kyverno/security/advisories/GHSA-5qq8-67g6-4h2w](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](https://www.vulncheck.com/advisories/kyverno-before-1.19.1-privilege-escalation-via-policy-apicall-urlpath)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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