Kyverno from 1.17.0 before 1.19.2 contains an authorization bypass vulnerability that allows namespace admins to escape namespace confinement because the cleanup controller builds its context loader with a nil policy. Attackers can create a namespaced CleanupPolicy with apiCall or globalReference context entries to read cross-namespace Secrets and modify validatingwebhookconfigurations using the cleanup controller's ServiceAccount.
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References
History
Thu, 05 Nov 2026 02:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Kyverno from 1.17.0 before 1.19.2 contains an authorization bypass vulnerability that allows namespace admins to escape namespace confinement because the cleanup controller builds its context loader with a nil policy. Attackers can create a namespaced CleanupPolicy with apiCall or globalReference context entries to read cross-namespace Secrets and modify validatingwebhookconfigurations using the cleanup controller's ServiceAccount. | |
| Title | Kyverno 1.17.0 before 1.19.2 Privilege Escalation via CleanupPolicy Context Loader | |
| First Time appeared |
Kyverno
Kyverno kyverno |
|
| Weaknesses | CWE-863 | |
| 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: 2026-11-05T02:25:08.931Z
Reserved: 2026-11-04T23:23:51.289Z
Link: CVE-2026-122304
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NVD
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Weaknesses