
CVE-2026-122311 · CRITICAL · CVSS 9.9 Kyverno versions 1.16.0 before 1.19.2 have a path traversal weakness, allowing namespaced CEL policies to escape their namespace. CVSS 3.1 · VulnCheck https://cve.new/CVE-2026-122311
Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Kyverno from 1.16.0 before 1.19.2 fails to validate path segments in the resource argument of resource.get() and resource.post(), allowing namespaced CEL policies to escape their namespace. Tenants who can create a NamespacedValidatingPolicy can insert .. segments to read and write arbitrary cluster objects using the admission controller's ServiceAccount, leading to cluster takeover.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE

CVE-2026-122311 · CRITICAL · CVSS 9.9 Kyverno versions 1.16.0 before 1.19.2 have a path traversal weakness, allowing namespaced CEL policies to escape their namespace. CVSS 3.1 · VulnCheck https://cve.new/CVE-2026-122311