Security advisory

{
  "id": "75649e925a4cf51efaa2a7d57f80c6111624d53685d94dfc565a6cb161bfb474",
  "url": "https://osv.dev/vulnerability/CVE-2021-25927",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-25927",
    "summary": "Prototype pollution vulnerability in 'safe-flat' versions 2.0.0 through 2.0.1 allows an attacker to cause a denial of service and may lead to remote code execution.",
    "evidence": "osv:CVE-2021-25927",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-25927",
      "aliases": [
        "CVE-2021-25927",
        "GHSA-33rv-m2gp-mm2r"
      ],
      "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/jessie-codes/safe-flat",
              "type": "GIT",
              "events": [
                {
                  "introduced": "bea258fea705a5e94a65da38868757a5ade38c7d"
                },
                {
                  "fixed": "205208feaccbb5f4154da90d12b4d345d3e770dc"
                },
                {
                  "fixed": "4b9b7db976bba8c968354f4315f5f9c219b7cbf3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:safe-flat_project:safe-flat:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "fixed": "2.0.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4b9b7db976bba8c968354f4315f5f9c219b7cbf3"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.0.1",
            "2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25927.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:33.954024552Z",
      "provider": "osv",
      "references": [
        "https://github.com/jessie-codes/safe-flat/commit/4b9b7db976bba8c968354f4315f5f9c219b7cbf3",
        "https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25927"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-25927",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385595,
  "published_at": "2021-04-26T11:15:08.217+00:00"
}