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CVE-2026-122312Kyverno 1.19.1 before 1.19.2 Namespace Isolation Bypass via APICall URLPath Query String
Kyverno from 1.19.1 before 1.19.2 contains a namespace isolation bypass in APICall Fetch() in pkg/engine/apicall/apiCall.go because path.Clean treats '?' as a path character, letting the namespace regex match segments inside the query string. Users who can create namespaced policies can supply a URLPath like /api/v1/nodes?x=/namespaces/default/ that passes validation while client-go requests the cluster-scoped endpoint, reading resources outside their namespace.
8.3 HIGHEPSS 0.31%Not in KEVNVD: Undergoing Analysis
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 8.3 | HIGH | 4.0VulnCheck (CNA) | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N |
| 7.7 | HIGH | 3.1VulnCheck (CNA) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
Details
- CVE ID
- CVE-2026-122312
- Status
- Undergoing Analysis
- Assigner (CNA)
- VulnCheck
- Published
- Nov 5, 2026
- Last modified
- 2026-11-05 14:58 UTC
- Weaknesses
- CWE-269 · Improper Privilege Management
Affected Products
As published by the CNA in the CVE record.
kyvernokyverno1 version range
- 1.19.1 before 1.19.2
References
- github.com https://github.com/kyverno/kyverno/commit/f67231def576eb0ad153dd8cbfc836908ab14c14
- github.com https://github.com/kyverno/kyverno/security/advisories/GHSA-pcx2-xcq4-65vf
- vulncheck.com https://www.vulncheck.com/advisories/kyverno-1.19.1-before-1.19.2-namespace-isolation-bypass-via-apicall-urlpath-query-string