CVE-2026-6720

CVE-2026-6720 · Calicoctl leaks cluster credentials to stderr when verbose logging is enabled

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When calicoctl is invoked with --log-level=info or --log-level=debug, the client prints the full contents of its loaded connection-configuration struct to stderr in a single log line. The struct embeds every credential calicoctl uses to talk to the cluster — inline kubeconfig (with bearer token), Kubernetes API bearer token, etcd password, and inline PEM-encoded etcd client certificate and key. Any reader of that stderr stream — CI job logs, session-recording archives, shared support-ticket transcripts, or local filesystem viewers on the host that ran calicoctl — can extract these credentials with zero Kubernetes privilege. calicoctl's default log level is panic, so this issue only triggers when verbose logging is explicitly enabled.

CVSS 7.2 · Высокий · EPSS 0,2% · Есть исправление

Опубликовано

2026-05-28T15:47:42.519Z

Обновлено

2026-05-28T17:04:11.659Z

Стек: containers

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