{"id":"CVE-2026-6720","aliases":["GHSA-3m4q-ggcj-j6m4","GO-2026-5893"],"title":"Calico Inserts Sensitive Information into Log File","summary":"Calico Inserts Sensitive Information into Log File","severity":"high","vendor":"projectcalico","product":"github.com/projectcalico/calicoctl/v3","ecosystem":"go","affected":["github.com/projectcalico/calicoctl/v3 < 3.31.6"],"patched":["github.com/projectcalico/calicoctl/v3 3.31.6"],"published":"2026-05-28","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:50:45.399486640Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-3m4q-ggcj-j6m4","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6720"},{"url":"https://github.com/projectcalico/calico/pull/12535"},{"url":"https://github.com/projectcalico/calico/pull/12536"},{"url":"https://github.com/projectcalico/calico/pull/12537"},{"url":"https://github.com/projectcalico/calico/commit/12908bb48a5bf8cbab5373f4d532509a30cf9b7f"},{"url":"https://github.com/projectcalico/calico/commit/8d87eddcb5eb6efc70c09eb0a33d63137359ea70"},{"url":"https://github.com/projectcalico/calico/commit/ce3ab2b39b5841757cbccf7922c895c47827f562"},{"url":"https://github.com/projectcalico/calico"},{"url":"https://www.tigera.io/security-bulletins/tta-2026-003"}],"tags":["osv","go"],"epss":0.00224,"epssPercentile":0.13294,"ingestedAt":"2026-09-12T03:13:01.749Z","slug":"CVE-2026-6720","body":"## Overview\n\nWhen 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.\n\n## Affected packages\n\n- `github.com/projectcalico/calicoctl/v3 < 3.31.6`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `github.com/projectcalico/calicoctl/v3 3.31.6`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}