{"id":"GHSA-v95x-xhq5-4929","summary":"kumactl connects to control plane without verifying TLS certificate when no CA is configured","details":"When an operator adds an HTTPS control plane profile to `kumactl` without providing a CA certificate, `kumactl` disables TLS verification and sends API tokens over the unverified connection\n\n## Impact\n\nAn attacker on the network path between the operator and the control plane can intercept user or admin API tokens and then act against the control plane as that user\n\n## Affected configurations\n\n- `kumactl` profiles manually added against an HTTPS control plane endpoint without `--ca-cert-file`\n\n## Not affected\n\n- The default local profile, which uses plain HTTP\n\n## Workarounds\n\nWhen adding an HTTPS control plane profile to `kumactl`, always pass `--ca-cert-file` pointing at the control plane's serving CA. Alternatively, terminate the control plane behind a publicly trusted certificate; the patched releases will verify successfully against the operating system trust store with no further configuration\n\n## Resources\n\n- Fix: https://github.com/kumahq/kuma/pull/16777","aliases":["CVE-2026-18678","CVE-2026-50166","GO-2026-6010"],"modified":"2026-08-24T00:37:07.270622681Z","published":"2026-07-16T19:12:08Z","database_specific":{"cwe_ids":["CWE-295"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-07-16T19:12:08Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/kumahq/kuma/security/advisories/GHSA-v95x-xhq5-4929"},{"type":"WEB","url":"https://github.com/kumahq/kuma/pull/16777"},{"type":"WEB","url":"https://github.com/kumahq/kuma/commit/2ecadac1aa2fd8cded4c2ab768949f4c2ec83e2a"},{"type":"PACKAGE","url":"https://github.com/kumahq/kuma"}],"affected":[{"package":{"name":"github.com/kumahq/kuma/v2","ecosystem":"Go","purl":"pkg:golang/github.com/kumahq/kuma/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.7.26"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-v95x-xhq5-4929/GHSA-v95x-xhq5-4929.json"}},{"package":{"name":"github.com/kumahq/kuma/v2","ecosystem":"Go","purl":"pkg:golang/github.com/kumahq/kuma/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.8.0"},{"fixed":"2.9.16"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-v95x-xhq5-4929/GHSA-v95x-xhq5-4929.json"}},{"package":{"name":"github.com/kumahq/kuma/v2","ecosystem":"Go","purl":"pkg:golang/github.com/kumahq/kuma/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.10.0"},{"fixed":"2.11.14"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-v95x-xhq5-4929/GHSA-v95x-xhq5-4929.json"}},{"package":{"name":"github.com/kumahq/kuma/v2","ecosystem":"Go","purl":"pkg:golang/github.com/kumahq/kuma/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.12.0"},{"fixed":"2.12.11"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-v95x-xhq5-4929/GHSA-v95x-xhq5-4929.json"}},{"package":{"name":"github.com/kumahq/kuma/v2","ecosystem":"Go","purl":"pkg:golang/github.com/kumahq/kuma/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.13.0"},{"fixed":"2.13.7"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-v95x-xhq5-4929/GHSA-v95x-xhq5-4929.json"}},{"package":{"name":"github.com/kumahq/kuma","ecosystem":"Go","purl":"pkg:golang/github.com/kumahq/kuma"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.8.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-v95x-xhq5-4929/GHSA-v95x-xhq5-4929.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H"}]}