Security advisory

{
  "id": "e392546c0926ebc404b4b16c1202a5528075045f6e9b9959bd51cbb1e99be0ed",
  "url": "https://osv.dev/vulnerability/CVE-2020-8820",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-8820",
    "summary": "An XSS Vulnerability exists in Webmin 1.941 and earlier affecting the Cluster Shell Commands Endpoint. A user may enter any XSS Payload into the Command field and execute it. Then, after revisiting the Cluster Shell Commands Menu, the XSS Payload will be rendered and executed.",
    "evidence": "osv:CVE-2020-8820",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-8820",
      "aliases": [
        "CVE-2020-8820"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/webmin/webmin",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "d5227e85afec512718dd77a759a56cd212a15c1c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:webmin:webmin:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.941"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.941",
            "1.940",
            "1.930",
            "1.920",
            "1.910",
            "1.900",
            "1.890",
            "1.880",
            "1.870",
            "1.860",
            "1.850",
            "1.840",
            "1.831",
            "1.830",
            "1.820",
            "1.810",
            "1.801",
            "1.800",
            "1.790",
            "1.780",
            "1.770",
            "1.760",
            "1.750",
            "1.740",
            "1.730",
            "1.720",
            "1.710",
            "1.700"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8820.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:58.055067551Z",
      "provider": "osv",
      "references": [
        "https://www.webmin.com/security.html"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-8820",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 438994,
  "published_at": "2020-10-12T16:15:12.513+00:00"
}