{"cve":"CVE-2026-6720","nvd":{"published":"2026-05-28T17:16:33.490","modified":"2026-06-17T11:01:12.887","status":"Deferred","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.","cvss_v4":{"vector":"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","score":7.2},"cvss_v3":null,"cwes":["CWE-532"],"references":["https://github.com/projectcalico/calico/pull/12535","https://github.com/projectcalico/calico/pull/12536","https://github.com/projectcalico/calico/pull/12537","https://www.tigera.io/security-bulletins/tta-2026-003/"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-6720","score":0.00224,"percentile":0.13086,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-3m4q-ggcj-j6m4","url":"https://osv.dev/vulnerability/GHSA-3m4q-ggcj-j6m4","summary":"Calico Inserts Sensitive Information into Log File","modified":"2026-09-10T03:50:45.399486640Z","packages":[{"ecosystem":"Go","name":"github.com/projectcalico/calicoctl/v3","purl":"pkg:golang/github.com/projectcalico/calicoctl/v3","ranges":["<3.31.6"],"fixed":["3.31.6"]}]},{"id":"GO-2026-5893","url":"https://osv.dev/vulnerability/GO-2026-5893","summary":"Calico Inserts Sensitive Information into Log File in github.com/projectcalico/calicoctl","modified":"2026-07-07T16:01:31.270066529Z","packages":[{"ecosystem":"Go","name":"github.com/projectcalico/calicoctl","purl":"pkg:golang/github.com/projectcalico/calicoctl","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/projectcalico/calicoctl/v3","purl":"pkg:golang/github.com/projectcalico/calicoctl/v3","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}