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CVE-2020-14338

Status: ModifiedMedium (5.3)—

A flaw was found in Wildfly's implementation of Xerces, specifically in the way the XMLSchemaValidator class in the JAXP component of Wildfly enforced the "use-grammar-pool-only" feature. This flaw allows a specially-crafted XML file to manipulate the validation process in certain cases. This issue is the same flaw as CVE-2020-14621, which affected OpenJDK, and uses a similar code. This flaw affects all Xerces JBoss versions before 2.12.0.SP3.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Redhat — Xerces

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-14338",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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    "cvssMetricV31": [
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        "type": "Primary",
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        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
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  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "Wildfly",
          "versions": [
            {
              "status": "affected",
              "version": "All xerces jboss versions before 2.12.0.SP3"
            }
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  "published": "2020-09-17T15:15:13.143",
  "references": [
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1860054",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
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      "source": "secalert@redhat.com"
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      "url": "https://lists.apache.org/thread.html/rf96c5afb26b596b4b97883aa90b6c0b0fc4c26aaeea7123c21912103%40%3Cj-users.xerces.apache.org%3E",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
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      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-20"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in Wildfly's implementation of Xerces, specifically in the way the XMLSchemaValidator class in the JAXP component of Wildfly enforced the \"use-grammar-pool-only\" feature. This flaw allows a specially-crafted XML file to manipulate the validation process in certain cases. This issue is the same flaw as CVE-2020-14621, which affected OpenJDK, and uses a similar code. This flaw affects all Xerces JBoss versions before 2.12.0.SP3."
    },
    {
      "lang": "es",
      "value": "Se encontró un fallo en la implementación de Xerces de Wildfly, específicamente en la manera en que la clase XMLSchemaValidator en el componente JAXP de Wildfly aplicó la característica \"use-grammar-pool-only\". Este fallo permite a un archivo XML especialmente diseñado manipular el proceso de comprobación en determinados casos. Este problema es el mismo fallo que CVE-2020-14621, que afectó a OpenJDK, y usa un código similar. Todas las versiones de xerces jboss anteriores a 2.12.0.SP3"
    }
  ],
  "lastModified": "2026-06-17T02:54:33.890",
  "configurations": [
    {
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        {
          "negate": false,
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              "versionEndExcluding": "2.12.0"
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}