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CVE PROGRAM SOURCE RECORD7.2 High

CVE-2026-6720

Calicoctl leaks cluster credentials to stderr when verbose logging is enabled

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Tigera Calico

Default version status: affected

  • 0 to < 3.32.0affected

Tigera Calico Enterprise

Default version status: affected

  • 0 to < 3.21.7affected
  • 3.22.3unaffected

Tigera Calico Cloud

Default version status: affected

  • 0 to < 22.4.0affected

References