CVE-2026-118759: Kubeflow Pipelines: Run-log endpoint permits unauthorized access to pod logs

The Kubeflow Pipelines API server’s GET /apis/v1alpha1/runs/{run_id}/nodes/{node_id}/log handler retrieves logs without authorizing the caller against the selected run. A caller who can reach the backend and knows a victim run ID and a suitable pod or node identifier can read live or archived logs using the API server’s permissions.

For live logs, the vulnerable handler also accepts the supplied node ID as a pod name in the run’s namespace without verifying that the pod belongs to the run. Depending on the API server’s pod-log permissions, a known run ID can therefore permit reading the main container logs of an unrelated pod in that namespace. Logs may contain sensitive workload data or credentials.

The affected handler does not authenticate the request itself. An external authentication gate or network policy can restrict reachability; public ingress exposure and unauthenticated enumeration of run IDs are not assumed.