CVE-2026-6720

Summary

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 Software

VendorProductVersion RangeStatus
TigeraCalico0 < 3.32.0affected
TigeraCalico Enterprise0 < 3.21.7affected
TigeraCalico Enterprise3.22.3unaffected
TigeraCalico Cloud0 < 22.4.0affected

Weaknesses

  • CWE-532: CWE-532

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References