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.
History

Tue, 10 Nov 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 05 Nov 2026 02:45:00 +0000

Type Values Removed Values Added
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.
Title Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPath
First Time appeared Kyverno
Kyverno kyverno
Weaknesses CWE-436
CPEs cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*
Vendors & Products Kyverno
Kyverno kyverno
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.4, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-11-05T02:25:12.955Z

Updated: 2026-11-09T16:54:07.737Z

Reserved: 2026-11-04T23:23:51.290Z

Link: CVE-2026-122310

cve-icon Vulnrichment

Updated: 2026-11-09T16:12:02.575Z

cve-icon NVD

Status : Analyzed

Published: 2026-11-05T03:17:23.337

Modified: 2026-11-10T20:39:13.623

Link: CVE-2026-122310

cve-icon Redhat

No data.