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CVE-2017-13692

Estado: ModificadaAlta (7.5)—

In Tidy 5.5.31, the IsURLCodePoint function in attrs.c allows attackers to cause a denial of service (Segmentation Fault), as demonstrated by an invalid ISALNUM argument.

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)

Htacg — Tidy

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2017-13692",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
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          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 3.9
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  },
  "affected": [
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      "affectedData": [
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          "versions": [
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  "published": "2017-08-25T08:29:00.227",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/100506",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/htacg/tidy-html5/issues/588",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
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      "source": "cve@mitre.org"
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://github.com/htacg/tidy-html5/issues/588",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Tidy 5.5.31, the IsURLCodePoint function in attrs.c allows attackers to cause a denial of service (Segmentation Fault), as demonstrated by an invalid ISALNUM argument."
    },
    {
      "lang": "es",
      "value": "En Tidy 5.5.31, la función IsURLCodePoint en attrs.c permite que atacantes provoquen una denegación de servicio (error de segmentación), tal y como demuestra un argumento ISALNUM inválido."
    }
  ],
  "lastModified": "2026-06-17T01:04:59.857",
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}