Security advisory

{
  "id": "6cc99bd368dfb580ebc26fe96544a878bdf7688afb2ede3950f320e0bffc1708",
  "url": "https://osv.dev/vulnerability/CVE-2020-8125",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-8125",
    "summary": "Flaw in input validation in npm package klona version 1.1.0 and earlier may allow prototype pollution attack that may result in remote code execution or denial of service of applications using klona.",
    "evidence": "osv:CVE-2020-8125",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-8125",
      "aliases": [
        "CVE-2020-8125",
        "GHSA-8f89-2fwj-5v5r"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/lukeed/klona",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "c969b506c4ecf5677050b671ae65e87e49f4facb"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:klona_project:klona:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.1.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.1.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8125.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:31.334639761Z",
      "provider": "osv",
      "references": [
        "https://hackerone.com/reports/778414"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-8125",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 432776,
  "published_at": "2020-02-04T20:15:14.62+00:00"
}