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Vulnerabilities / CVE-2026-22039

critical

CVE-2026-22039

Kyverno Cross-Namespace Privilege Escalation via Policy apiCall

Published Modified CWE 269, 918
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

GHSA10.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Bitnami10.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by GHSA, Bitnami.

Description

Kyverno is a policy engine designed for cloud native platform engineering teams. Versions prior to 1.16.3 and 1.15.3 have a critical authorization boundary bypass in namespaced Kyverno Policy apiCall. The resolved `urlPath` is executed using the Kyverno admission controller ServiceAccount, with no enforcement that the request is limited to the policy’s namespace. As a result, any authenticated user with permission to create a namespaced Policy can cause Kyverno to perform Kubernetes API requests using Kyverno’s admission controller identity, targeting any API path allowed by that ServiceAccount’s RBAC. This breaks namespace isolation by enabling cross-namespace reads (for example, ConfigMaps and, where permitted, Secrets) and allows cluster-scoped or cross-namespace writes (for example, creating ClusterPolicies) by controlling the urlPath through context variable substitution. Versions 1.16.3 and 1.15.3 contain a patch for the vulnerability.

Affected packages and fixed versions

SourcePackageFixed in
bitnami::Bitnami Vulnerability Databasekyverno1.15.3, 1.16.3
go::GitHub Security Advisory Gogithub.com/kyverno/kyverno1.15.3, 1.16.3
chainguardkyverno-1.13, kyverno-1.14, kyverno-fips-1.14 and 4 more1.13.6-r13 and 5 more
minimoskyverno-1.15, kyverno-1.16, kyverno-fips-1.15 and 3 more1.15.3-r0 and 2 more
wolfikyverno-notation-aws1.1-r33
Show all 16 entries from 5 sources
SourcePackageFixed in
bitnami::Bitnami Vulnerability Databasekyverno1.15.3, 1.16.3
go::GitHub Security Advisory Gogithub.com/kyverno/kyverno1.15.3, 1.16.3
chainguardkyverno-1.131.13.6-r13
chainguardkyverno-1.141.14.5-r5
chainguardkyverno-fips-1.141.14.5-r5
chainguardkyverno-fips-1.161.16.3-r0
chainguardkyverno-notation-aws1.1-r33
chainguardkyverno-notation-aws-fips1.1-r32
chainguardreports-server0
minimoskyverno-1.151.15.3-r0
minimoskyverno-1.161.16.3-r0
minimoskyverno-fips-1.151.15.3-r0
minimoskyverno-fips-1.161.16.3-r0
minimoskyverno-notation-aws1.1-r1
minimoskyverno-notation-aws-fips1.1-r1
wolfikyverno-notation-aws1.1-r33

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.