{"id":"GHSA-3m4q-ggcj-j6m4","summary":"Calico Inserts Sensitive Information into Log File","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.","aliases":["CVE-2026-6720","GO-2026-5893"],"modified":"2026-07-17T21:07:24.524887241Z","published":"2026-05-28T18:30:32Z","database_specific":{"cwe_ids":["CWE-532"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-07-02T18:07:41Z","nvd_published_at":"2026-05-28T17:16:33Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6720"},{"type":"WEB","url":"https://github.com/projectcalico/calico/pull/12535"},{"type":"WEB","url":"https://github.com/projectcalico/calico/pull/12536"},{"type":"WEB","url":"https://github.com/projectcalico/calico/pull/12537"},{"type":"WEB","url":"https://github.com/projectcalico/calico/commit/12908bb48a5bf8cbab5373f4d532509a30cf9b7f"},{"type":"WEB","url":"https://github.com/projectcalico/calico/commit/8d87eddcb5eb6efc70c09eb0a33d63137359ea70"},{"type":"WEB","url":"https://github.com/projectcalico/calico/commit/ce3ab2b39b5841757cbccf7922c895c47827f562"},{"type":"PACKAGE","url":"https://github.com/projectcalico/calico"},{"type":"WEB","url":"https://www.tigera.io/security-bulletins/tta-2026-003"}],"affected":[{"package":{"name":"github.com/projectcalico/calicoctl/v3","ecosystem":"Go","purl":"pkg:golang/github.com/projectcalico/calicoctl/v3"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.31.6"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-3m4q-ggcj-j6m4/GHSA-3m4q-ggcj-j6m4.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","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"}]}