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CVE-2024-23807

Status: AnalyzedCritical (9.8)—

The Apache Xerces C++ XML parser on versions 3.0.0 before 3.2.5 contains a use-after-free error triggered during the scanning of external DTDs.

Users are recommended to upgrade to version 3.2.5 which fixes the issue, or mitigate the issue by disabling DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable.

This issue has been disclosed before as CVE-2018-1311, but unfortunately that advisory incorrectly stated the issue would be fixed in version 3.2.3 or 3.2.4.

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)

Apache — Xerces-c++

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2024-23807",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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              "automatable": "no"
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              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-01-21T00:00:00+00:00"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 3.9
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
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        "exploitabilityScore": 2.2
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  "affected": [
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          "versions": [
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  "published": "2024-02-29T01:44:10.340",
  "references": [
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      "tags": [
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "security@apache.org",
      "description": [
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          "value": "CWE-416"
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  "descriptions": [
    {
      "lang": "en",
      "value": "The Apache Xerces C++ XML parser on versions 3.0.0 before 3.2.5 contains a use-after-free error triggered during the scanning of external DTDs.\n\nUsers are recommended to upgrade to version 3.2.5 which fixes the issue, or mitigate the issue by disabling DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable.\n\nThis issue has been disclosed before as CVE-2018-1311, but unfortunately that advisory incorrectly stated the issue would be fixed in version 3.2.3 or 3.2.4.\n\n"
    },
    {
      "lang": "es",
      "value": "El analizador XML Apache Xerces C++ en las versiones 3.0.0 anteriores a la 3.2.5 contiene un error de use-after-free que se activa durante el escaneo de DTD externos. Se recomienda a los usuarios actualizar a la versión 3.2.5, que soluciona el problema, o mitigarlo desactivando el procesamiento de DTD. Esto se puede lograr a través del DOM usando una función de analizador estándar, o vía SAX usando la variable de entorno XERCES_DISABLE_DTD. Este problema se reveló anteriormente como CVE-2018-1311, pero desafortunadamente ese aviso indicaba incorrectamente que el problema se solucionaría en la versión 3.2.3 o 3.2.4."
    }
  ],
  "lastModified": "2026-06-17T07:13:38.500",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
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              "versionEndExcluding": "3.2.5",
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          "operator": "OR"
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  "sourceIdentifier": "security@apache.org"
}