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TI-2026-29707 Aliases CVE-2026-41068GHSA-cvq5-hhx3-f99p

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

Priority HIGH 67CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00267 18th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed kyverno (kyverno): 1.17.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
kyvernokyvernobefore 1.17.21.17.2Patch availableCNA
—github.com/kyverno/kyverno (Go)up to 1.17.1—No fix listedGHSA-cvq5-hhx3-f99p
  • kyverno Vendorkyverno Affected before 1.17.2 Fixed in 1.17.2 Patch available CNA
  • github.com/kyverno/kyverno (Go) Vendor— Affected up to 1.17.1 Fixed in — No fix listed GHSA-cvq5-hhx3-f99p

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:kyverno:kyverno:*:-:*:*:*:*:*:*before 1.17.2Vulnerablekyverno
  • cpe:2.3:a:kyverno:kyverno:*:-:*:*:*:*:*:* Versions before 1.17.2 Vulnerable ·kyverno

Remediation

  • Fix · CNA kyverno (kyverno) Fixed in 1.17.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41068
  2. 2026-10-03 Alias added: GHSA-cvq5-hhx3-f99p

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • TI-2026-17733 Kyverno Cross-Namespace Privilege Escalation via Policy apiCall CVSS 3.1CRITICAL 10.0
  • TI-2026-29924 Kyverno: ServiceAccount token leaked to external servers via apiCall service URL CVSS 3.1CRITICAL 9.1
  • TI-2026-29524 kyverno apicall servicecall implicit bearer token injection leaks kyverno serviceaccount token CVSS 3.1HIGH 8.1
  • TI-2025-21189 Kyverno ignores subjectRegExp and IssuerRegExp CVSS 3.1HIGH 8.0
  • TI-2026-30072 Kyverno Controller Denial of Service via forEach Mutation Panic CVSS 3.1HIGH 7.7
  • TI-2026-19239 Kyverno Denial of Service via Context Variable Amplification in Policy Engine CVSS 3.1HIGH 7.7
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences