Vulnerability · Published Apr 24, 2026 · Assigned by GitHub_M

CVE-2026-41068Kyverno: Cross-Namespace Read Bypasses RBAC Isolation (CVE-2026-22039 Incomplete Fix)

High 7.7

In plain English

A high-severity incorrect authorization in kyverno from kyverno. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.3%top 81.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Kyverno is a policy engine designed for cloud native platform engineering teams. The patch for CVE-2026-22039 fixed cross-namespace privilege escalation in Kyverno's `apiCall` context by validating the `URLPath` field. However, the ConfigMap context loader has the identical vulnerability — the `configMap.namespace` field accepts any namespace with zero validation, allowing a namespace admin to read ConfigMaps from any namespace using Kyverno's privileged service account. This is a complete RBAC bypass in multi-tenant Kubernetes clusters. An updated fix is available in version 1.17.2.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/kyverno/kyverno	no fix listed	GHSA-cvq5-hhx3-f99p
Go	github.com/kyverno/kyverno	no fix listed	GO-2026-5337

Affected products (as reported)

Vendor	Product	Versions
kyverno	kyverno	< 1.17.2

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

https://github.com/kyverno/kyverno/security/advisories/GHSA-cvq5-hhx3-f99p x_refsource_CONFIRM
https://github.com/kyverno/kyverno/commit/bbf3e5c01391d612968440659028ae98e565a777 x_refsource_MISC