NIXPKGS-2026-1269

GitHub issue published on

Permalink CVE-2026-41068

7.7 HIGH

CVSS version (CVSS): 3.1
Attack Vector (AV): Network (N)
Attack Complexity (AC): Low (L)
Privileges Required (PR): Low (L)
User Interaction (UI): None (N)
Scope (S): Changed (C)
Confidentiality (C): High (H)
Integrity (I): None (N)
Availability (A): None (N)
Modified Attack Vector (MAV): Network (N)
Modified Attack Complexity (MAC): Low (L)
Modified Privileges Required (MPR): Low (L)
Modified User Interaction (MUI): None (N)
Modified Confidentiality (MC): High (H)
Modified Scope (MS): Changed (C)
Modified Integrity (MI): None (N)
Modified Availability (MA): None (N)

updated 2 weeks, 2 days ago by @LeSuisse Activity log

Created suggestion 2 weeks, 4 days ago
@LeSuisse ignored package kyverno-chainsaw 2 weeks, 2 days ago
@LeSuisse accepted 2 weeks, 2 days ago
@LeSuisse published on GitHub 2 weeks, 2 days ago

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

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.