Security advisory

{
  "id": "7dfc5b6c6b734d6e417feb7196223ff2e08d0ea3bf1dc6767fc136c2266d9b47",
  "url": "https://osv.dev/vulnerability/CVE-2018-18854",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-18854",
    "summary": "Lightbend Spray spray-json through 1.3.4 allows remote attackers to cause a denial of service (resource consumption) because of Algorithmic Complexity during the parsing of many JSON object fields (with keys that have the same hash code).",
    "evidence": "osv:CVE-2018-18854",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-18854",
      "aliases": [
        "CVE-2018-18854",
        "GHSA-q8xj-8xg3-w432"
      ],
      "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/spray/spray-json",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "9f100db9e3e39ddb4c2606720841652334634e6c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:lightbend:spray-json:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.3.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.3.4",
            "v1.3.3",
            "v1.3.2-2.12",
            "v1.3.2",
            "v1.3.1",
            "v1.3.0",
            "v1.2.6",
            "v1.2.5",
            "v1.2.4",
            "v1.2.3",
            "v1.2.2",
            "v1.2.1",
            "v1.2",
            "v1.1.1",
            "v1.1.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-18854.json"
          }
        }
      ],
      "modified": "2026-10-20T10:49:53.860918240Z",
      "provider": "osv",
      "references": [
        "https://github.com/spray/spray-json/issues/277"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-18854",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 381061,
  "published_at": "2018-10-31T05:29:00.297+00:00"
}