Security advisory

{
  "id": "1b5259df7b830a0fb25bf5d19bad8a0d8d871bfbca203ebb55ad2354da4ded89",
  "url": "https://osv.dev/vulnerability/CVE-2019-18836",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-18836",
    "summary": "Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used.\"",
    "evidence": "osv:CVE-2019-18836",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-18836",
      "aliases": [
        "CVE-2019-18836",
        "GHSA-3xvf-4396-cj46"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/envoyproxy/envoy",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ab30cafa0c033f8ef77c54dd98badea62b78506e"
                },
                {
                  "last_affected": "ab30cafa0c033f8ef77c54dd98badea62b78506e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:envoyproxy:envoy:1.12.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.12.0"
                      },
                      {
                        "last_affected": "1.12.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.12.0",
            "v1.12.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-18836.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/istio/istio",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c2bd59595ce699b31d0f931885f023028ff7902b"
                },
                {
                  "last_affected": "3cfabd9b36bcf9b5af3c390982772e8f1e798618"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.3.0"
                      },
                      {
                        "last_affected": "1.3.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.3.3",
            "1.3.2",
            "1.3.1",
            "1.3.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-18836.json"
          }
        }
      ],
      "modified": "2026-10-20T10:50:50.570883115Z",
      "provider": "osv",
      "references": [
        "https://groups.google.com/forum/#%21forum/envoy-users",
        "https://blog.envoyproxy.io",
        "https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46",
        "https://github.com/istio/istio/issues/18229"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-18836",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382229,
  "published_at": "2019-11-11T01:15:10.21+00:00"
}