Security advisory

{
  "id": "806de83bc3c31379fcca56a3bab2007d63fe2208f35103fb4b2ec475a4d726c5",
  "url": "https://osv.dev/vulnerability/CVE-2020-28847",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-28847",
    "summary": "Cross Site Scripting (XSS) vulnerability in xCss Valine v1.4.14 via the nick parameter to /classes/Comment.",
    "evidence": "osv:CVE-2020-28847",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-28847",
      "aliases": [
        "CVE-2020-28847",
        "GHSA-6xvq-2gj8-4276"
      ],
      "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/xcss/valine",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a57685fac2ce20187f985d982bf9b80574f0e0db"
                },
                {
                  "last_affected": "a57685fac2ce20187f985d982bf9b80574f0e0db"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:valine.js:valine:1.4.14:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.4.14"
                      },
                      {
                        "last_affected": "1.4.14"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.4.14",
            "v1.4.14"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28847.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:08.386003450Z",
      "provider": "osv",
      "references": [
        "https://github.com/xCss/Valine/issues/348"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-28847",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384201,
  "published_at": "2022-04-05T16:15:10.857+00:00"
}