Security advisory

{
  "id": "b6fc268b1e74534b8fefb509f06b7efa1d885868d693c86c207b156d95cd6554",
  "url": "https://osv.dev/vulnerability/CVE-2019-13126",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-13126",
    "summary": "An integer overflow in NATS Server before 2.0.2 allows a remote attacker to crash the server by sending a crafted request. If authentication is enabled, then the remote attacker must have first authenticated.",
    "evidence": "osv:CVE-2019-13126",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-13126",
      "aliases": [
        "CVE-2019-13126",
        "GHSA-jp4j-47f9-2vc3",
        "GO-2022-0852"
      ],
      "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/nats-io/nats-server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6a40503f972e032881e43e1a1bcf30f2efe0e2e4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.0.0",
            "v2.0.0-RC19",
            "v2.0.0-RC14",
            "v1.3.0",
            "v1.2.0",
            "v1.1.0",
            "v1.0.6",
            "v1.0.4",
            "v1.0.2",
            "v1.0.0",
            "v0.9.6",
            "v0.9.4",
            "v0.9.2",
            "v0.8.1",
            "v0.8.0",
            "v0.7.2",
            "v0.7.0",
            "v0.6.8",
            "v0.6.6",
            "v0.6.4",
            "v0.6.2",
            "v0.6.0",
            "v0.5.6",
            "v0.5.4",
            "v0.5.2",
            "v0.5.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-13126.json"
          }
        }
      ],
      "modified": "2026-10-20T10:50:59.572943512Z",
      "provider": "osv",
      "references": [
        "https://github.com/nats-io/nats-server/pull/1053",
        "https://www.twistlock.com/labs-blog/finding-dos-vulnerability-nats-go-fuzz-cve-2019-13126/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-13126",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382420,
  "published_at": "2019-07-29T17:15:11.467+00:00"
}