VYPR
← All advisories
Critical severity9.9OSV Advisory· Published Jan 27, 2026· Updated Jun 17, 2026

CVE-2026-22039

CVE-2026-22039

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
github.com/kyverno/kyvernoGo
< 1.15.31.15.3
github.com/kyverno/kyvernoGo
>= 1.16.0-rc.1, < 1.16.31.16.3

Affected products

52

Patches

Vulnerability mechanics

References

5

News mentions

0

No linked articles in our index yet.