Cilium has possible unencrypted traffic between nodes when using WireGuard and L7 policies

{
  "id": "ca6b6a8323b0928f36febb6a0f13bbc1d5a4a480b3f07b3a6fef8261f74fea8c",
  "url": "https://osv.dev/vulnerability/CVE-2024-28250",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Cilium has possible unencrypted traffic between nodes when using WireGuard and L7 policies",
    "summary": "Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Starting in version 1.14.0 and prior to versions 1.14.8 and 1.15.2, In Cilium clusters with WireGuard enabled and traffic matching Layer 7 policies Wireguard-eligible traffic that is sent between a node's Envoy proxy and pods on other nodes is sent unencrypted and Wireguard-eligible traffic that is sent between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.14.8 and 1.15.2 in in native routing mode (`routingMode=native`) and in Cilium 1.14.4 in tunneling mode (`routingMode=tunnel`). Not that in tunneling mode, `encryption.wireguard.encapsulate` must be set to `true`. There is no known workaround for this issue.",
    "evidence": "osv:CVE-2024-28250",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2024-28250",
      "aliases": [
        "BIT-cilium-2024-28250",
        "BIT-cilium-operator-2024-28250",
        "BIT-cilium-proxy-2024-28250",
        "BIT-hubble-2024-28250",
        "BIT-hubble-relay-2024-28250",
        "BIT-hubble-ui-2024-28250",
        "BIT-hubble-ui-backend-2024-28250",
        "CVE-2024-28250",
        "GHSA-v6q2-4qr3-5cw6",
        "GO-2024-2657"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cilium/cilium",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b5013e1562dbfe442dd2011a5af46de9095315ff"
                },
                {
                  "fixed": "cf6e022edbedc39c35237330ab85c158ff17f207"
                },
                {
                  "introduced": "2db45c468981a863b230186ad37d44e5a7c08d61"
                },
                {
                  "fixed": "7cf5782920423b07e7a4e6e67fafd81e1d4a1d33"
                },
                {
                  "fixed": "ca1af73ffe025e2ebdb6c8cd5b2cfb1909cb3b06"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.14.0"
                      },
                      {
                        "fixed": "1.14.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.15.0"
                      },
                      {
                        "fixed": "1.15.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ca1af73ffe025e2ebdb6c8cd5b2cfb1909cb3b06"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.13.13"
                  },
                  {
                    "range": [
                      {
                        "fixed": "cf6e022edbedc39c35237330ab85c158ff17f207"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.14.8"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7cf5782920423b07e7a4e6e67fafd81e1d4a1d33"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.15.2"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.15.1",
            "1.15.1",
            "v1.14.7",
            "1.14.7",
            "v1.15.0",
            "1.15.0",
            "v1.14.6",
            "1.14.6",
            "v1.14.5",
            "1.14.5",
            "v1.14.4",
            "1.14.4",
            "v1.14.3",
            "1.14.3",
            "v1.14.2",
            "1.14.2",
            "v1.14.1",
            "1.14.1",
            "v1.14.0",
            "1.14.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-28250.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:43.027921326Z",
      "provider": "osv",
      "references": [
        "https://github.com/cilium/cilium/releases/tag/v1.13.13",
        "https://github.com/cilium/cilium/releases/tag/v1.14.8",
        "https://github.com/cilium/cilium/releases/tag/v1.15.2",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/28xxx/CVE-2024-28250.json",
        "https://github.com/cilium/cilium/security/advisories/GHSA-v6q2-4qr3-5cw6",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-28250"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-311"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/28xxx/CVE-2024-28250.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-28250",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 510754,
  "published_at": "2024-03-18T21:42:21.689+00:00"
}