Publish GHSA-3fcv-jvfp-m4q9

Author: advisory-database[bot]

advisories/github-reviewed/2026/07/GHSA-3fcv-jvfp-m4q9/GHSA-3fcv-jvfp-m4q9.json

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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-3fcv-jvfp-m4q9",
+  "modified": "2026-07-06T17:03:20Z",
+  "published": "2026-07-06T17:03:20Z",
+  "aliases": [
+    "CVE-2026-49445"
+  ],
+  "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.",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/cilium/cilium"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "1.19.0"
+            },
+            {
+              "fixed": "1.19.2"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/cilium/cilium"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "1.18.0"
+            },
+            {
+              "fixed": "1.18.8"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/cilium/cilium"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "1.17.14"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "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"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-862"
+    ],
+    "severity": "CRITICAL",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-07-06T17:03:20Z",
+    "nvd_published_at": null
+  }
+}