Security advisory

{
  "id": "1d6b39370447f7d85cf92862551943e32ffcf1b4c8359786411c0552af9e7606",
  "url": "https://osv.dev/vulnerability/CVE-2020-21699",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-21699",
    "summary": "The web server Tengine 2.2.2 developed in the Nginx version from 0.5.6 thru 1.13.2 is vulnerable to an integer overflow vulnerability in the nginx range filter module, resulting in the leakage of potentially sensitive information triggered by specially crafted requests.",
    "evidence": "osv:CVE-2020-21699",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-21699",
      "aliases": [
        "CVE-2020-21699"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/alibaba/tengine",
              "type": "GIT",
              "events": [
                {
                  "introduced": "52fff0eb7d8dd7d789e810de433d164aebf39433"
                },
                {
                  "last_affected": "52fff0eb7d8dd7d789e810de433d164aebf39433"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:alibaba:tengine:2.2.2:*:*:*:*:nginx:*:*",
                    "range": [
                      {
                        "introduced": "2.2.2"
                      },
                      {
                        "last_affected": "2.2.2"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.2.2",
            "tengine-2.2.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-21699.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:59.759242125Z",
      "provider": "osv",
      "references": [
        "https://github.com/ZxDecide/Nginx-variants/blob/master/%E9%99%84%E4%BB%B6%28Tengine%29.docx"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-21699",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 439381,
  "published_at": "2023-08-22T19:16:15.847+00:00"
}