Cilium: Namespaced HTTPRoutes can redirect traffic to other namespaces in github.com/cilium/cilium

{
  "id": "19f0f99e7ca6cb58440bb5dcc7514888e6e3a7dcb91d5fd211e179f8c98be163",
  "url": "https://osv.dev/vulnerability/GO-2026-6596",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Cilium: Namespaced HTTPRoutes can redirect traffic to other namespaces in github.com/cilium/cilium",
    "summary": "Cilium: Namespaced HTTPRoutes can redirect traffic to other namespaces in github.com/cilium/cilium",
    "evidence": "osv:GO-2026-6596",
    "products": [
      {
        "name": {
          "value": "github.com/cilium/cilium",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.17.17",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "1.18.11",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "1.19.5",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "GO-2026-6596",
      "aliases": [
        "BIT-cilium-2026-56742",
        "BIT-cilium-operator-2026-56742",
        "BIT-hubble-relay-2026-56742",
        "CVE-2026-56742",
        "GHSA-w7c2-w76w-5hmj",
        "GO-2026-6596"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.17.17"
                },
                {
                  "introduced": "1.18.0"
                },
                {
                  "fixed": "1.18.11"
                },
                {
                  "introduced": "1.19.0"
                },
                {
                  "fixed": "1.19.5"
                }
              ]
            }
          ],
          "package": {
            "name": "github.com/cilium/cilium",
            "purl": "pkg:golang/github.com/cilium/cilium",
            "ecosystem": "Go"
          },
          "database_specific": {
            "source": "https://vuln.go.dev/ID/GO-2026-6596.json"
          },
          "ecosystem_specific": {}
        }
      ],
      "modified": "2026-10-07T17:45:13.511612531Z",
      "provider": "osv",
      "references": [
        "https://github.com/cilium/cilium/security/advisories/GHSA-w7c2-w76w-5hmj",
        "https://github.com/cilium/cilium/commit/7422068aff67ac77c7dcc57aa5b9240c91333deb",
        "https://github.com/cilium/cilium/commit/e0b1cef513ff910323f3743e9f3e3d86721e4857",
        "https://github.com/cilium/cilium/commit/f23929cff682d6ed0dc158070812cb302fc0032b",
        "https://github.com/cilium/cilium/commit/fd47963ea394d5e8fa4a88c40a79063430c512ca",
        "https://github.com/cilium/cilium/releases/tag/v1.17.17",
        "https://github.com/cilium/cilium/releases/tag/v1.18.11",
        "https://github.com/cilium/cilium/releases/tag/v1.19.5"
      ],
      "provider_metadata": {
        "url": "https://pkg.go.dev/vuln/GO-2026-6596",
        "review_status": "REVIEWED"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-56742",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 97111,
  "published_at": "2026-10-01T20:23:38+00:00"
}