{"id":"GHSA-3fcv-jvfp-m4q9","summary":"Cilium vulnerable to sensitive information disclosure and cluster disruption via local Envoy admin socket access","details":"### Impact\n\nWhen Cilium L7 functionality is enabled on a cluster, the Envoy instance supporting this functionality creates a world-accessible socket on cluster nodes. A local attacker would be able to access Envoy admin endpoints. Depending on deployment configuration, this can expose sensitive information or allow disruptive administrative operations, such as:\n\n- Exposing TLS secrets\n- Disrupting traffic in the cluster\n- Terminating the Envoy process  \n\nThis issue affects both the embedded and standalone Envoy deployment models.\n\n### Patches\n\nThis issue affects:\n\n- Cilium v1.19 between v1.19.0 and v1.19.1 inclusive\n- Cilium v1.18 between v1.18.0 and v1.18.7 inclusive\n- All versions of Cilium prior to v1.17.14\n\nThis issue has been patched in https://github.com/cilium/cilium/pull/44512, included in:\n\n- Cilium v1.19.2\n- Cilium v1.18.8\n- Cilium v1.17.14\n\n### Workarounds\n\nThere is no known workaround to this issue.\n\n### Acknowledgements\n\nThe Cilium community has worked together with members of Isovalent to prepare these mitigations. Special thanks to [moemen](https://github.com/moemen) for reporting the issue and [0xch4z](https://github.com/0xch4z) for their work on triaging and remediating this issue.\n\n### For more information\n\nIf there are any questions or comments about this advisory, please reach out on [Slack (https://docs.cilium.io/en/latest/community/community/).\n\nIf anyone thinks they have found a vulnerability affecting Cilium, it is strongly encouraged to report it to the security mailing list at [security@cilium.io](mailto:security@cilium.io). This is a private mailing list for the Cilium security team, and the report will be treated as a top priority.","aliases":["BIT-cilium-2026-49445","BIT-cilium-operator-2026-49445","BIT-hubble-relay-2026-49445","CVE-2026-49445","GO-2026-5905"],"modified":"2026-07-20T08:41:18.912957805Z","published":"2026-07-06T17:03:20Z","database_specific":{"nvd_published_at":null,"cwe_ids":["CWE-862"],"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2026-07-06T17:03:20Z"},"references":[{"type":"WEB","url":"https://github.com/cilium/cilium/security/advisories/GHSA-3fcv-jvfp-m4q9"},{"type":"WEB","url":"https://github.com/cilium/cilium/pull/44512"},{"type":"PACKAGE","url":"https://github.com/cilium/cilium"}],"affected":[{"package":{"name":"github.com/cilium/cilium","ecosystem":"Go","purl":"pkg:golang/github.com/cilium/cilium"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.19.0"},{"fixed":"1.19.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-3fcv-jvfp-m4q9/GHSA-3fcv-jvfp-m4q9.json"}},{"package":{"name":"github.com/cilium/cilium","ecosystem":"Go","purl":"pkg:golang/github.com/cilium/cilium"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.18.0"},{"fixed":"1.18.8"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-3fcv-jvfp-m4q9/GHSA-3fcv-jvfp-m4q9.json"}},{"package":{"name":"github.com/cilium/cilium","ecosystem":"Go","purl":"pkg:golang/github.com/cilium/cilium"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.17.14"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-3fcv-jvfp-m4q9/GHSA-3fcv-jvfp-m4q9.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H"}]}