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CVE-2026-122310

9.9, critical

Kyverno from 1.19.1 before 1.19.2 validates a Policy's context.apiCall urlPath after cleaning it but executes the raw path, whose…

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.9, critical critical CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
No public evidence
Published
5 Nov 2026today

Description

Kyverno from 1.19.1 before 1.19.2 validates a Policy's context.apiCall urlPath after cleaning it but executes the raw path, whose fragment or query the Kubernetes client discards. A namespace-scoped user who can create a Policy can hide ../ segments behind # or ? to reach cluster-scoped endpoints with Kyverno's ServiceAccount, gaining cluster admin.

Details

Vendor
Kyverno
Product
kyverno
Weakness
CWE-436 (opens in a new tab)
Status
Received
Updated
5 Nov 2026
Assigner
disclosure@vulncheck.com

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

References 2

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Kyverno CVEs

Every Kyverno CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-122302 kyverno Improper Privilege Management Vulnerability 9.8, critical
  • CVE-2026-122303 kyverno Missing Authorization Vulnerability 9.9, critical
  • CVE-2026-122304 kyverno Incorrect Authorization Vulnerability 9.9, critical
  • CVE-2026-122311 kyverno Path Traversal Vulnerability 9.9, critical
  • CVE-2026-122313 kyverno Improper Privilege Management Vulnerability 9.9, critical
  • CVE-2026-122321 kyverno Time-of-Check Time-of-Use Race Condition Vulnerability 9.1, critical
  • CVE-2026-122305 Kyverno before 1.19.2 contains a denial of service vulnerability in substituteVariablesIfAny that allows low-privileged users to hang… 7.7, high
  • CVE-2026-122306 Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespaced policy authors to exhaust admission controller… 7.7, high

Beyond this page

Is CVE-2026-122310 in your network?

This page tells you how dangerous CVE-2026-122310 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 5 Nov 2026, not the live upstream state.