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CVE-2017-16798

Estado: ModificadaMedia (5.4)—

In CMS Made Simple 2.2.3.1, the is_file_acceptable function in modules/FileManager/action.upload.php only blocks file extensions that begin or end with a "php" substring, which allows remote attackers to bypass intended access restrictions or trigger XSS via other extensions, as demonstrated by .phtml, .pht, .html, or .svg.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Cmsmadesimple — CMS Made Simple

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2017-16798",
  "cveTags": [],
  "metrics": {
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      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
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  "affected": [
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      "affectedData": [
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          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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  "published": "2017-11-12T18:29:00.300",
  "references": [
    {
      "url": "https://github.com/bsmali4/cve/blob/master/CMS%20Made%20Simple%20UPLOAD%20FILE%20XSS.md",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
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          "value": "CWE-79"
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      "lang": "en",
      "value": "In CMS Made Simple 2.2.3.1, the is_file_acceptable function in modules/FileManager/action.upload.php only blocks file extensions that begin or end with a \"php\" substring, which allows remote attackers to bypass intended access restrictions or trigger XSS via other extensions, as demonstrated by .phtml, .pht, .html, or .svg."
    },
    {
      "lang": "es",
      "value": "En CMS Made Simple 2.2.3.1, la función is_file_acceptable en modules/FileManager/action.upload.php solo bloquea las extensiones de archivo que empiezan o finalizan con una subcadena \"php\", lo que permite a los atacantes remotos omitir las restricciones de acceso planeadas o desencadenar Cross-Site Scripting (XSS) mediante otras extensiones, tal y como se demostró con .phtml, .pht, .html o .svg."
    }
  ],
  "lastModified": "2026-06-17T01:09:56.520",
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  "sourceIdentifier": "cve@mitre.org"
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