{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.32.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "eb1cf57823a1dd8d25c48b82fd023ea9e3e17996"
            }
          ],
          "repo": "https://github.com/projectcalico/calico",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Tigera",
    "cwe_ids": [
      "CWE-532"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6720.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "3.21.7"
          },
          {
            "fixed": "22.4.0"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "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.",
  "id": "CVE-2026-6720",
  "modified": "2026-07-08T05:39:21.611877978Z",
  "published": "2026-05-28T15:47:42.519Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6720.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6720"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.tigera.io/security-bulletins/tta-2026-003/"
    },
    {
      "type": "FIX",
      "url": "https://github.com/projectcalico/calico/pull/12535"
    },
    {
      "type": "FIX",
      "url": "https://github.com/projectcalico/calico/pull/12536"
    },
    {
      "type": "FIX",
      "url": "https://github.com/projectcalico/calico/pull/12537"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Calicoctl leaks cluster credentials to stderr when verbose logging is enabled"
}