جزئیات آسیب‌پذیری

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.

• https://github.com/projectcalico/calico/pull/12535 patch
• https://github.com/projectcalico/calico/pull/12536 patch
• https://github.com/projectcalico/calico/pull/12537 patch
• https://www.tigera.io/security-bulletins/tta-2026-003/ vendor-advisory