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CVE-2020-17531

Estado: ModificadaCrítica (9.8)—

A Java Serialization vulnerability was found in Apache Tapestry 4. Apache Tapestry 4 will attempt to deserialize the "sp" parameter even before invoking the page's validate method, leading to deserialization without authentication. Apache Tapestry 4 reached end of life in 2008 and no update to address this issue will be released. Apache Tapestry 5 versions are not vulnerable to this issue. Users of Apache Tapestry 4 should upgrade to the latest Apache Tapestry 5 version.

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)

Apache — Tapestry

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-17531",
  "cveTags": [],
  "metrics": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
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          "confidentialityImpact": "PARTIAL"
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        "obtainAllPrivilege": false,
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          "baseSeverity": "CRITICAL",
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          "userInteraction": "NONE",
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  "affected": [
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      "affectedData": [
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          "vendor": "Apache Software Foundation",
          "product": "Apache Tapestry",
          "versions": [
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  "published": "2020-12-08T13:15:13.010",
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  "weaknesses": [
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      "source": "security@apache.org",
      "description": [
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          "value": "CWE-502"
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      "description": [
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          "value": "CWE-502"
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    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A Java Serialization vulnerability was found in Apache Tapestry 4. Apache Tapestry 4 will attempt to deserialize the \"sp\" parameter even before invoking the page's validate method, leading to deserialization without authentication. Apache Tapestry 4 reached end of life in 2008 and no update to address this issue will be released. Apache Tapestry 5 versions are not vulnerable to this issue. Users of Apache Tapestry 4 should upgrade to the latest Apache Tapestry 5 version."
    },
    {
      "lang": "es",
      "value": "Se encontró una vulnerabilidad de serialización de Java en Apache Tapestry versión 4. Apache Tapestry versión 4 intentará deserializar el parámetro \"sp\" inclusive antes de invocar el método de comprobación de la página, lo que conlleva a una deserialización sin autenticación. Apache Tapestry versión 4 llegó al final de su vida útil en 2008 y no será publicada ninguna actualización para abordar este problema. Las versiones de Apache Tapestry 5 no son vulnerables a este problema. Los usuarios de Apache Tapestry versión 4 deben actualizar a la última versión de Apache Tapestry 5"
    }
  ],
  "lastModified": "2026-06-17T02:59:05.843",
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}