Security advisory

{
  "id": "81fb72d4b3204e41855854b5105a4a6d1257b0209dc2f9b3e641b48d40465e4e",
  "url": "https://osv.dev/vulnerability/CVE-2019-11839",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-11839",
    "summary": "njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in Array.prototype.push after a resize, related to njs_array_prototype_push in njs/njs_array.c, because of njs_array_expand size mishandling.",
    "evidence": "osv:CVE-2019-11839",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2019-11839",
      "aliases": [
        "CVE-2019-11839"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nginx/njs",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "615a52fb5736f6320f49b92ddf23849703b64ef6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:f5:njs:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.3.1",
            "0.3.0",
            "0.2.8",
            "0.2.7",
            "0.2.6",
            "0.2.5",
            "0.2.4",
            "0.2.3",
            "0.2.2",
            "0.2.1",
            "0.2.0",
            "0.1.15",
            "0.1.14",
            "0.1.13",
            "0.1.12",
            "0.1.11",
            "0.1.10",
            "0.1.9",
            "0.1.8",
            "0.1.7",
            "0.1.6",
            "0.1.5",
            "0.1.4",
            "0.1.3",
            "0.1.2",
            "0.1.1",
            "0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-11839.json"
          }
        }
      ],
      "modified": "2026-10-20T10:50:42.206393896Z",
      "provider": "osv",
      "references": [
        "https://github.com/nginx/njs/issues/152"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-11839",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382025,
  "published_at": "2019-05-09T14:29:00.637+00:00"
}