Security advisory

{
  "id": "da6f7c8d3663f8bc64922be5535fc25b5f65795479a674c04552b5ad9fab4ef6",
  "url": "https://osv.dev/vulnerability/CVE-2021-41745",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-41745",
    "summary": "ShowDoc 2.8.3 ihas a file upload vulnerability, where attackers can use the vulnerability to obtain server permissions.",
    "evidence": "osv:CVE-2021-41745",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-41745",
      "aliases": [
        "CVE-2021-41745",
        "GHSA-4286-h47h-m5v6"
      ],
      "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/star7th/showdoc",
              "type": "GIT",
              "events": [
                {
                  "introduced": "43de4812d50aef2ae15acc9b5106c875b560a986"
                },
                {
                  "last_affected": "43de4812d50aef2ae15acc9b5106c875b560a986"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:showdoc:showdoc:2.8.3:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.8.3"
                      },
                      {
                        "last_affected": "2.8.3"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.8.3",
            "v2.8.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-41745.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:17.745796474Z",
      "provider": "osv",
      "references": [
        "https://github.com/purple-WL/SHOWDOC-file-upload-vulnerability",
        "https://www.cnvd.org.cn/flaw/show/CNVD-2020-49480"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-41745",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429633,
  "published_at": "2021-10-22T12:15:09.107+00:00"
}