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.
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Affected Vendors & Products
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Fixes
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Workaround
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References
History
Thu, 05 Nov 2026 02:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Kyverno 1.19.1 before 1.19.2 Namespace Isolation Bypass via APICall URLPath Query String | |
| First Time appeared |
Kyverno
Kyverno kyverno |
|
| Weaknesses | CWE-269 | |
| CPEs | cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Kyverno
Kyverno kyverno |
|
| References |
| |
| Metrics |
cvssV3_1
|
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-11-05T02:25:14.338Z
Reserved: 2026-11-04T23:25:07.316Z
Link: CVE-2026-122312
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Redhat
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OpenCVE Enrichment
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Weaknesses