Security advisory

{
  "id": "19f72a93ae670bc4bfa343cba46bab1efe8b8d16e824f43984134d205744b8b6",
  "url": "https://osv.dev/vulnerability/CVE-2021-25987",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-25987",
    "summary": "Hexo versions 0.0.1 to 5.4.0 are vulnerable against stored XSS. The post “body” and “tags” don’t sanitize malicious javascript during web page generation. Local unprivileged attacker can inject arbitrary code.",
    "evidence": "osv:CVE-2021-25987",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-25987",
      "aliases": [
        "CVE-2021-25987",
        "GHSA-q54r-r9pr-w7qv"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/hexojs/hexo",
              "type": "GIT",
              "events": [
                {
                  "introduced": "3fdc19bcaaebe7b84d615490c0c87b371331e127"
                },
                {
                  "last_affected": "b65a5623b7f7b539b48bf6ebdab73885841a120f"
                },
                {
                  "fixed": "5170df2d3fa9c69e855c4b7c2b084ebfd92d5200"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:hexo:hexo:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0.0.1"
                      },
                      {
                        "last_affected": "5.4.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5170df2d3fa9c69e855c4b7c2b084ebfd92d5200"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "5.4.0",
            "5.3.0",
            "5.2.0",
            "5.1.1",
            "5.1.0",
            "5.0.2",
            "5.0.1",
            "5.0.0",
            "4.2.0",
            "4.1.1",
            "4.1.0",
            "4.0.0",
            "3.9.0",
            "3.8.0",
            "3.7.1",
            "3.7.0",
            "3.6.0",
            "3.5.0",
            "3.4.4",
            "3.4.3",
            "3.4.2",
            "3.4.1",
            "3.4.0",
            "3.3.9",
            "3.3.8",
            "3.3.7",
            "3.3.6",
            "3.3.5",
            "3.3.0",
            "3.2.2",
            "3.2.1",
            "3.2.0",
            "3.2.0-beta.2",
            "3.2.0-beta.1",
            "3.1.1",
            "3.1.0",
            "3.0.1",
            "3.0.0",
            "3.0.0-rc.4",
            "3.0.0-rc.3",
            "3.0.0-rc.2",
            "3.0.0-rc.1",
            "3.0.0-beta.4",
            "3.0.0-beta.3",
            "3.0.0-beta.2",
            "3.0.0-beta.1",
            "2.8.3",
            "2.8.2",
            "2.8.1",
            "2.8.0",
            "2.7.1",
            "2.7.0",
            "2.6.3",
            "2.6.2",
            "2.6.1",
            "2.5.7",
            "2.5.6",
            "2.5.5",
            "2.5.4",
            "2.5.3",
            "2.5.0",
            "2.4.5",
            "2.4.4",
            "2.4.3",
            "2.4.2",
            "2.4.1",
            "2.4.0",
            "2.3.0",
            "2.1.0",
            "2.0.7",
            "2.0.6",
            "2.0.5",
            "2.0.4",
            "2.0.3",
            "2.0.2",
            "2.0.1",
            "2.0.0",
            "1.2.4",
            "1.2.3",
            "1.2.2",
            "1.2.1",
            "1.2.0",
            "1.1.4",
            "1.1.3",
            "1.1.2",
            "1.1.1",
            "1.1.0",
            "1.0.9",
            "1.0.8",
            "1.0.7",
            "1.0.6",
            "1.0.5",
            "1.0.4",
            "1.0.2",
            "1.0.1",
            "1.0.0",
            "0.5.12",
            "0.5.11",
            "0.5.10",
            "0.5.9",
            "0.5.8",
            "0.5.7",
            "0.5.6",
            "0.5.5",
            "0.5.4",
            "0.5.3",
            "0.5.2",
            "0.5.1",
            "0.5.0",
            "0.4.5",
            "0.4.4",
            "0.4.3",
            "0.4.2",
            "0.4.1",
            "0.4.0",
            "0.3.2",
            "0.3.1",
            "0.3.0",
            "0.2.1",
            "0.2.0",
            "0.1.11",
            "0.1.10",
            "0.1.9",
            "0.1.8",
            "0.1.7",
            "0.1.6",
            "0.1.5",
            "0.1.4",
            "0.1.3",
            "0.1.2",
            "0.1.1",
            "0.1.0",
            "0.0.6",
            "0.0.5",
            "0.0.4",
            "0.0.3",
            "0.0.2",
            "0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25987.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:34.504135055Z",
      "provider": "osv",
      "references": [
        "https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25987",
        "https://github.com/hexojs/hexo/commit/5170df2d3fa9c69e855c4b7c2b084ebfd92d5200"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-25987",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385625,
  "published_at": "2021-11-30T14:15:07.53+00:00"
}