Common Weakness Enumeration

CWE-611

Allowed

Improper Restriction of XML External Entity Reference

Abstraction: Base · Status: Draft

The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

1710 vulnerabilities reference this CWE, most recent first.

GHSA-CCMR-QJ26-845G

Vulnerability from github – Published: 2022-05-13 01:34 – Updated: 2022-06-28 23:22
VLAI
Summary
Improper Restriction of XML External Entity Reference in Elasticsearch
Details

Elasticsearch Security versions 6.5.0 and 6.5.1 contain an XXE flaw in Machine Learning's find_file_structure API. If a policy allowing external network access has been added to Elasticsearch's Java Security Manager then an attacker could send a specially crafted request capable of leaking content of local files on the Elasticsearch node. This could allow a user to access information that they should not have access to.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.elasticsearch:elasticsearch"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.5.0"
            },
            {
              "fixed": "6.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-17247"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-28T23:22:46Z",
    "nvd_published_at": "2018-12-20T22:29:00Z",
    "severity": "MODERATE"
  },
  "details": "Elasticsearch Security versions 6.5.0 and 6.5.1 contain an XXE flaw in Machine Learning\u0027s find_file_structure API. If a policy allowing external network access has been added to Elasticsearch\u0027s Java Security Manager then an attacker could send a specially crafted request capable of leaking content of local files on the Elasticsearch node. This could allow a user to access information that they should not have access to.",
  "id": "GHSA-ccmr-qj26-845g",
  "modified": "2022-06-28T23:22:46Z",
  "published": "2022-05-13T01:34:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-17247"
    },
    {
      "type": "WEB",
      "url": "https://discuss.elastic.co/t/elastic-stack-6-5-2-security-update/159594"
    },
    {
      "type": "WEB",
      "url": "https://www.elastic.co/community/security"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/106294"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Improper Restriction of XML External Entity Reference in Elasticsearch"
}

GHSA-CCPX-2WJ9-VW2W

Vulnerability from github – Published: 2022-05-17 19:57 – Updated: 2024-04-04 00:00
VLAI
Details

XML external entity (XXE) vulnerability in Open-Xchange (OX) AppSuite before 7.4.2-rev11 and 7.6.x before 7.6.0-rev9 allows remote attackers to read arbitrary files and possibly other unspecified impact via a crafted OpenDocument Text document.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2014-5238"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-01-14T16:15:00Z",
    "severity": "HIGH"
  },
  "details": "XML external entity (XXE) vulnerability in Open-Xchange (OX) AppSuite before 7.4.2-rev11 and 7.6.x before 7.6.0-rev9 allows remote attackers to read arbitrary files and possibly other unspecified impact via a crafted OpenDocument Text document.",
  "id": "GHSA-ccpx-2wj9-vw2w",
  "modified": "2024-04-04T00:00:18Z",
  "published": "2022-05-17T19:57:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-5238"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/128257/Open-Xchange-7.6.0-XSS-SSRF-Traversal.html"
    },
    {
      "type": "WEB",
      "url": "http://software.open-xchange.com/OX6/doc/Release_Notes_for_Patch_Release_2112_7.6.0_2014-08-25.pdf"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/archive/1/archive/1/533443/100/0/threaded"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-CCRC-9X59-3VC4

Vulnerability from github – Published: 2023-06-29 21:30 – Updated: 2023-07-06 21:39
VLAI
Summary
requests-xml XML External Entity Injection vulnerability
Details

requests-xml v0.2.3 was discovered to contain an XML External Entity Injection (XXE) vulnerability which allows attackers to execute arbitrary code via a crafted XML file.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "requests-xml"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-26708"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-06-30T20:36:25Z",
    "nvd_published_at": "2023-06-29T21:15:09Z",
    "severity": "HIGH"
  },
  "details": "requests-xml v0.2.3 was discovered to contain an XML External Entity Injection (XXE) vulnerability which allows attackers to execute arbitrary code via a crafted XML file.",
  "id": "GHSA-ccrc-9x59-3vc4",
  "modified": "2023-07-06T21:39:44Z",
  "published": "2023-06-29T21:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26708"
    },
    {
      "type": "WEB",
      "url": "https://github.com/erinxocon/requests-xml/issues/7"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/erinxocon/requests-xml"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/requests-xml/PYSEC-2023-96.yaml"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20230908-0003"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "requests-xml XML External Entity Injection vulnerability"
}

GHSA-CF9W-6PRV-PR7R

Vulnerability from github – Published: 2022-11-12 12:00 – Updated: 2025-05-01 15:31
VLAI
Details

CBRN-Analysis before 22 allows XXE attacks via am mws XML document, leading to NTLMv2-SSP hash disclosure.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-45194"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-11-12T00:15:00Z",
    "severity": "MODERATE"
  },
  "details": "CBRN-Analysis before 22 allows XXE attacks via am mws XML document, leading to NTLMv2-SSP hash disclosure.",
  "id": "GHSA-cf9w-6prv-pr7r",
  "modified": "2025-05-01T15:31:31Z",
  "published": "2022-11-12T12:00:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-45194"
    },
    {
      "type": "WEB",
      "url": "https://zigrin.com/advisories/cbrn-analysis-external-xml-entity-injection"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-CFHW-X225-JRHR

Vulnerability from github – Published: 2022-05-24 17:44 – Updated: 2022-05-24 17:44
VLAI
Details

A vulnerability has been identified in Solid Edge SE2020 (All Versions < SE2020MP13), Solid Edge SE2021 (All Versions < SE2021MP3). When opening a specially crafted SEECTCXML file, the application could disclose arbitrary files to remote attackers. This is because of the passing of specially crafted content to the underlying XML parser without taking proper restrictions such as prohibiting an external dtd. (ZDI-CAN-11923)

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2020-28387"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-03-15T17:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability has been identified in Solid Edge SE2020 (All Versions \u003c SE2020MP13), Solid Edge SE2021 (All Versions \u003c SE2021MP3). When opening a specially crafted SEECTCXML file, the application could disclose arbitrary files to remote attackers. This is because of the passing of specially crafted content to the underlying XML parser without taking proper restrictions such as prohibiting an external dtd. (ZDI-CAN-11923)",
  "id": "GHSA-cfhw-x225-jrhr",
  "modified": "2022-05-24T17:44:32Z",
  "published": "2022-05-24T17:44:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-28387"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-715184.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-CFM2-F46F-RC3G

Vulnerability from github – Published: 2026-02-27 09:30 – Updated: 2026-02-27 09:30
VLAI
Details

An XML External Entity (XXE) vulnerability allows malicious user to perform Server-Side Request Forgery (SSRF) via crafted XML input containing malicious external entity references.

This issue affects Xerox FreeFlow Core versions up to and including 8.0.7. 

Please consider upgrading to FreeFlow Core version 8.1.0 via the software available on -  https://www.support.xerox.com/en-us/product/core/downloads

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-2252"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-27T09:16:17Z",
    "severity": "HIGH"
  },
  "details": "An XML External Entity (XXE) vulnerability allows malicious user to perform Server-Side Request Forgery (SSRF) via crafted XML input containing malicious external entity references.\n\nThis issue affects Xerox FreeFlow Core versions up to and including 8.0.7.\u00a0\n\nPlease consider upgrading to FreeFlow Core version 8.1.0 via the software available on -\u00a0 https://www.support.xerox.com/en-us/product/core/downloads",
  "id": "GHSA-cfm2-f46f-rc3g",
  "modified": "2026-02-27T09:30:29Z",
  "published": "2026-02-27T09:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2252"
    },
    {
      "type": "WEB",
      "url": "https://securitydocs.business.xerox.com/wp-content/uploads/2026/02/Xerox-Security-Bulletin-026-005-for-Xerox-Freeflow-Core.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-CFXJ-95GX-6RXG

Vulnerability from github – Published: 2022-05-24 17:38 – Updated: 2022-05-24 17:38
VLAI
Details

A vulnerability has been identified in JT2Go (All Versions < V13.1.0), Teamcenter Visualization (All Versions < V13.1.0). When opening a specially crafted xml file, the application could disclose arbitrary files to remote attackers. This is because of the passing of specially crafted content to the underlying XML parser without taking proper restrictions such as prohibiting an external dtd.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2020-26981"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-01-12T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability has been identified in JT2Go (All Versions \u003c V13.1.0), Teamcenter Visualization (All Versions \u003c V13.1.0). When opening a specially crafted xml file, the application could disclose arbitrary files to remote attackers. This is because of the passing of specially crafted content to the underlying XML parser without taking proper restrictions such as prohibiting an external dtd.",
  "id": "GHSA-cfxj-95gx-6rxg",
  "modified": "2022-05-24T17:38:32Z",
  "published": "2022-05-24T17:38:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26981"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-622830.pdf"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-048"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-CG9X-G3GM-H5H6

Vulnerability from github – Published: 2026-07-29 15:14 – Updated: 2026-07-29 15:14
VLAI
Summary
veraPDF-validatio: Use of Default `DocumentBuilderFactory` leads to XXE When Processing Untrusted PDFs
Details

Summary

veraPDF-validation has an XML External Entity (XXE) vulnerability in two PDF parsing paths (validate and GFPDAcroForm.getdynamicRender()). A malicious/crafted PDF supplied to a veraPDF consumer can lead to the expansion of external entities while parsing rich-text annotation/form-field values or XFA configurations, allowing local file disclosure and potentially outbound network requests depending on the runtime (host) environment.

Details

Consumers that utilise either the PDFAValidator.validate(...) or GFPDAcroForm(acroForm).getdynamicRender() APIs to process untrusted PDFs are vulnerable to XXE exploits.

Both vulnerable paths share the same root cause: the underlying source binds a default DocumentBuilderFactory and immediately calls newDocumentBuilder() which does not disable parsing of DTDs, external entities, XInclude, or external resource access directives in XML schemas.

This is an XXE vulnerability affecting applications that use veraPDF's affected APIs to parse or validate untrusted PDFs.

An attacker could craft a PDF that includes crafted XML external entities that when processed by vulnerable consumers could lead to local file disclosure and server-side outbound requests to attacker-controlled endpoints, depending on JVM XML parser behavior and network controls on the host.

Show details on source website

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.30.1"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.verapdf:validation-model"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.17.35"
            },
            {
              "fixed": "1.30.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.31.70"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.verapdf:validation-model"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.31.1"
            },
            {
              "fixed": "1.31.71"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.30.1"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.verapdf:validation-model-jakarta"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.17.35"
            },
            {
              "fixed": "1.30.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.31.70"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.verapdf:validation-model-jakarta"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.31.1"
            },
            {
              "fixed": "1.31.71"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-54082"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-29T15:14:32Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nveraPDF-validation has an XML External Entity (XXE) vulnerability in two PDF parsing paths (validate and `GFPDAcroForm.getdynamicRender()`). A malicious/crafted PDF supplied to a veraPDF consumer can lead to the expansion of external entities while parsing rich-text annotation/form-field values or XFA configurations, allowing local file disclosure and potentially outbound network requests depending on the runtime (host) environment.\n\n### Details\n\nConsumers that utilise either the `PDFAValidator.validate(...)` or `GFPDAcroForm(acroForm).getdynamicRender()` APIs to process untrusted PDFs are vulnerable to XXE exploits. \n\nBoth vulnerable paths share the same root cause: the underlying source binds a default `DocumentBuilderFactory` and immediately calls `newDocumentBuilder()` which does not disable parsing of DTDs, external entities, XInclude, or external resource access directives in XML schemas.\n\nThis is an XXE vulnerability affecting applications that use veraPDF\u0027s affected APIs to parse or validate untrusted PDFs.\n\nAn attacker could craft a PDF that includes crafted XML external entities that when processed by vulnerable consumers could lead to local file disclosure and server-side outbound requests to attacker-controlled endpoints, depending on JVM XML parser behavior and network controls on the host.",
  "id": "GHSA-cg9x-g3gm-h5h6",
  "modified": "2026-07-29T15:14:32Z",
  "published": "2026-07-29T15:14:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/veraPDF/veraPDF-validation/security/advisories/GHSA-cg9x-g3gm-h5h6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/veraPDF/veraPDF-validation/pull/730"
    },
    {
      "type": "WEB",
      "url": "https://github.com/veraPDF/veraPDF-validation/commit/94caa46c1a594512247fbd46c808edae39469542"
    },
    {
      "type": "WEB",
      "url": "https://github.com/veraPDF/veraPDF-validation/commit/cacd9436d0de40b0e58cc7d2dbb06451619e61ec"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/veraPDF/veraPDF-validation"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "veraPDF-validatio: Use of Default `DocumentBuilderFactory` leads to XXE When Processing Untrusted PDFs"
}

GHSA-CGH7-RGQG-HRCX

Vulnerability from github – Published: 2023-09-06 15:30 – Updated: 2024-01-30 23:11
VLAI
Summary
Path traversal allows exploiting XXE vulnerability in Jenkins Job Configuration History Plugin
Details

Jenkins Job Configuration History Plugin 1227.v7a_79fc4dc01f and earlier does not restrict 'timestamp' query parameters in multiple endpoints, allowing attackers with to delete attacker-specified directories on the Jenkins controller file system as long as they contain a file called 'history.xml'.

Show details on source website

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1227.v7a"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.jenkins-ci.plugins:jobConfigHistory"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1229.v3039470161a_d"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-41932"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-01-30T23:11:19Z",
    "nvd_published_at": "2023-09-06T13:15:09Z",
    "severity": "MODERATE"
  },
  "details": "Jenkins Job Configuration History Plugin 1227.v7a_79fc4dc01f and earlier does not restrict \u0027timestamp\u0027 query parameters in multiple endpoints, allowing attackers with to delete attacker-specified directories on the Jenkins controller file system as long as they contain a file called \u0027history.xml\u0027.",
  "id": "GHSA-cgh7-rgqg-hrcx",
  "modified": "2024-01-30T23:11:19Z",
  "published": "2023-09-06T15:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-41932"
    },
    {
      "type": "WEB",
      "url": "https://www.jenkins.io/security/advisory/2023-09-06/#SECURITY-3235"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2023/09/06/9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Path traversal allows exploiting XXE vulnerability in Jenkins Job Configuration History Plugin"
}

GHSA-CGV8-9R56-PQQH

Vulnerability from github – Published: 2022-04-06 00:01 – Updated: 2022-04-13 00:00
VLAI
Details

Zoho ManageEngine ADAudit Plus before 7060 is vulnerable to an unauthenticated XXE attack that leads to Remote Code Execution.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-28219"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-04-05T19:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "Zoho ManageEngine ADAudit Plus before 7060 is vulnerable to an unauthenticated XXE attack that leads to Remote Code Execution.",
  "id": "GHSA-cgv8-9r56-pqqh",
  "modified": "2022-04-13T00:00:42Z",
  "published": "2022-04-06T00:01:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-28219"
    },
    {
      "type": "WEB",
      "url": "https://manageengine.com"
    },
    {
      "type": "WEB",
      "url": "https://www.horizon3.ai/red-team-blog-cve-2022-28219"
    },
    {
      "type": "WEB",
      "url": "https://www.manageengine.com/products/active-directory-audit/cve-2022-28219.html"
    },
    {
      "type": "WEB",
      "url": "http://cewolf.sourceforge.net/new/index.html"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/167997/ManageEngine-ADAudit-Plus-Path-Traversal-XML-Injection.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Mitigation
Implementation System Configuration

Many XML parsers and validators can be configured to disable external entity expansion.

CAPEC-221: Data Serialization External Entities Blowup

This attack takes advantage of the entity replacement property of certain data serialization languages (e.g., XML, YAML, etc.) where the value of the replacement is a URI. A well-crafted file could have the entity refer to a URI that consumes a large amount of resources to create a denial of service condition. This can cause the system to either freeze, crash, or execute arbitrary code depending on the URI.