Security advisory

{
  "id": "7a7aa9ba567e2317abad542e0e3814075a647b598c36b4eaec0abb7c5dab6828",
  "url": "https://osv.dev/vulnerability/CVE-2018-17194",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-17194",
    "summary": "When a client request to a cluster node was replicated to other nodes in the cluster for verification, the Content-Length was forwarded. On a DELETE request, the body was ignored, but if the initial request had a Content-Length value other than 0, the receiving nodes would wait for the body and eventually timeout. Mitigation: The fix to check DELETE requests and overwrite non-zero Content-Length header values was applied on the Apache NiFi 1.8.0 release. Users running a prior 1.x release should upgrade to the appropriate release.",
    "evidence": "osv:CVE-2018-17194",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-17194",
      "aliases": [
        "CVE-2018-17194",
        "GHSA-43fp-vwwg-qgv6"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/nifi",
              "type": "GIT",
              "events": [
                {
                  "introduced": "74d5224783dfdc513f6b3ad5ed96671d3c581707"
                },
                {
                  "last_affected": "241e5411a24435ca2c39ab7bea1c5eb9ed195cb3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:nifi:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.0"
                      },
                      {
                        "last_affected": "1.7.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-17194.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:54.824706537Z",
      "provider": "osv",
      "references": [
        "https://nifi.apache.org/security.html#CVE-2018-17194"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-17194",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 438283,
  "published_at": "2018-12-19T14:29:00.44+00:00"
}