Common Weakness Enumeration

CWE-611

Allowed

Improper Restriction of XML External Entity Reference

Abstraction: Base · Status: Draft

API response cwe.mitre.org

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.

1695 vulnerabilities reference this CWE, most recent first.

GHSA-77HP-PFXW-4W63

Vulnerability from github – Published: 2018-12-20 22:02 – Updated: 2022-09-14 22:20
VLAI
Summary
XML External Entity (XXE) vulnerability in codelibs fess
Details

codelibs fess version before commit faa265b contains a XML External Entity (XXE) vulnerability in GSA XML file parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via specially crafted GSA XML files. This vulnerability appears to have been fixed in after commit faa265b.

Severity
10.0 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.codelibs.fess:fess"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "12.3.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-1000822"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:21:51Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "codelibs fess version before commit faa265b contains a XML External Entity (XXE) vulnerability in GSA XML file parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via specially crafted GSA XML files. This vulnerability appears to have been fixed in after commit faa265b.",
  "id": "GHSA-77hp-pfxw-4w63",
  "modified": "2022-09-14T22:20:53Z",
  "published": "2018-12-20T22:02:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1000822"
    },
    {
      "type": "WEB",
      "url": "https://github.com/codelibs/fess/issues/1851"
    },
    {
      "type": "WEB",
      "url": "https://0dd.zone/2018/10/27/fess-XXE"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-77hp-pfxw-4w63"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/codelibs/fess"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "XML External Entity (XXE) vulnerability in codelibs fess"
}

GHSA-77JG-CPW9-73VG

Vulnerability from github – Published: 2023-11-30 12:30 – Updated: 2025-02-13 19:25
VLAI
Summary
Apache Cocoon Improper Restriction of XML External Entity Reference vulnerability
Details

Improper Restriction of XML External Entity Reference vulnerability in Apache Cocoon. This issue affects Apache Cocoon: from 2.2.0 before 2.3.0.

Users are recommended to upgrade to version 2.3.0, which fixes the issue.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.cocoon:cocoon"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.2.0"
            },
            {
              "fixed": "2.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-49733"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-11-30T19:51:43Z",
    "nvd_published_at": "2023-11-30T12:15:09Z",
    "severity": "CRITICAL"
  },
  "details": "Improper Restriction of XML External Entity Reference vulnerability in Apache Cocoon. This issue affects Apache Cocoon: from 2.2.0 before 2.3.0.\n\nUsers are recommended to upgrade to version 2.3.0, which fixes the issue.",
  "id": "GHSA-77jg-cpw9-73vg",
  "modified": "2025-02-13T19:25:43Z",
  "published": "2023-11-30T12:30:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-49733"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/cocoon"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/t87nntzt6dxw354zbqr9k7l7o1x8gq11"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2023/11/30/5"
    }
  ],
  "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"
    }
  ],
  "summary": "Apache Cocoon Improper Restriction of XML External Entity Reference vulnerability"
}

GHSA-77M5-RM2P-M2QH

Vulnerability from github – Published: 2023-04-11 09:30 – Updated: 2024-04-04 03:23
VLAI
Details

National land numerical information data conversion tool all versions improperly restricts XML external entity references (XXE). By processing a specially crafted XML file, arbitrary files on the PC may be accessed by an attacker.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2023-25955"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-04-11T09:15:00Z",
    "severity": "MODERATE"
  },
  "details": "National land numerical information data conversion tool all versions improperly restricts XML external entity references (XXE). By processing a specially crafted XML file, arbitrary files on the PC may be accessed by an attacker.",
  "id": "GHSA-77m5-rm2p-m2qh",
  "modified": "2024-04-04T03:23:52Z",
  "published": "2023-04-11T09:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25955"
    },
    {
      "type": "WEB",
      "url": "https://jvn.jp/en/jp/JVN75742861"
    },
    {
      "type": "WEB",
      "url": "https://nlftp.mlit.go.jp/i_news.html#news4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-78VM-22GJ-Q6CP

Vulnerability from github – Published: 2024-06-06 21:30 – Updated: 2024-06-06 21:30
VLAI
Details

IBM Engineering Requirements Management DOORS Next 7.0.2 and 7.0.3 is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 268758.

Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2023-45192"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-06T19:15:50Z",
    "severity": "HIGH"
  },
  "details": "IBM Engineering Requirements Management DOORS Next 7.0.2 and 7.0.3 is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources.  IBM X-Force ID:  268758.",
  "id": "GHSA-78vm-22gj-q6cp",
  "modified": "2024-06-06T21:30:35Z",
  "published": "2024-06-06T21:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45192"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/268758"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/7156492"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-7946-5RP5-F5V2

Vulnerability from github – Published: 2023-04-25 15:30 – Updated: 2024-04-04 03:40
VLAI
Details

An XXE issue was discovered in Nokia NetAct before 22 FP2211 via an XML document to a Performance Manager page. Input validation and a proper XML parser configuration are missing. For an external attacker, it is very difficult to exploit this, because a few dynamically created parameters such as Jsession-id, a CSRF token, and an Nxsrf token would be needed. The attack can realistically only be performed by an internal user.

Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2023-26058"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-04-25T13:15:09Z",
    "severity": "MODERATE"
  },
  "details": "An XXE issue was discovered in Nokia NetAct before 22 FP2211 via an XML document to a Performance Manager page. Input validation and a proper XML parser configuration are missing. For an external attacker, it is very difficult to exploit this, because a few dynamically created parameters such as Jsession-id, a CSRF token, and an Nxsrf token would be needed. The attack can realistically only be performed by an internal user.",
  "id": "GHSA-7946-5rp5-f5v2",
  "modified": "2024-04-04T03:40:30Z",
  "published": "2023-04-25T15:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26058"
    },
    {
      "type": "WEB",
      "url": "https://nokia.com"
    },
    {
      "type": "WEB",
      "url": "https://www.ptsecurity.com/ww-en/analytics/threatscape/pt-2022-02"
    }
  ],
  "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"
    }
  ]
}

GHSA-79PR-23XJ-FHHQ

Vulnerability from github – Published: 2022-05-24 17:45 – Updated: 2022-05-24 17:45
VLAI
Details

MuleSoft is aware of a XML External Entity (XXE) vulnerability affecting certain versions of a Mule runtime component that may affect both CloudHub and on-premise customers. Affected versions: Mule 4.x runtime released before February 2, 2021.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-1628"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-03-26T17:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "MuleSoft is aware of a XML External Entity (XXE) vulnerability affecting certain versions of a Mule runtime component that may affect both CloudHub and on-premise customers. Affected versions: Mule 4.x runtime released before February 2, 2021.",
  "id": "GHSA-79pr-23xj-fhhq",
  "modified": "2022-05-24T17:45:31Z",
  "published": "2022-05-24T17:45:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-1628"
    },
    {
      "type": "WEB",
      "url": "https://help.salesforce.com/articleView?id=000357384\u0026type=1\u0026mode=1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-7C2R-3JQF-C9RW

Vulnerability from github – Published: 2018-10-18 17:43 – Updated: 2022-09-14 00:19
VLAI
Summary
jackson-dataformat-xml vulnerable to server side request forgery (SSRF)
Details

Versions of jackson-dataformat-xml) prior to 2.7.8 and prior to 2.8.4 allow remote attackers to conduct server-side request forgery (SSRF) attacks via vectors related to a DTD.

Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.fasterxml.jackson.dataformat:jackson-dataformat-xml"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.7.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "com.fasterxml.jackson.dataformat:jackson-dataformat-xml"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.8.0"
            },
            {
              "fixed": "2.8.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2016-7051"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611",
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:22:20Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "Versions of jackson-dataformat-xml) prior to 2.7.8 and prior to  2.8.4 allow remote attackers to conduct server-side request forgery (SSRF) attacks via vectors related to a DTD.",
  "id": "GHSA-7c2r-3jqf-c9rw",
  "modified": "2022-09-14T00:19:56Z",
  "published": "2018-10-18T17:43:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-7051"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FasterXML/jackson-dataformat-xml/issues/211"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1378673"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/FasterXML/jackson-dataformat-xml"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-7c2r-3jqf-c9rw"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/97688"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "jackson-dataformat-xml vulnerable to server side request forgery (SSRF)"
}

GHSA-7CC9-J4MV-VCJP

Vulnerability from github – Published: 2024-11-18 20:01 – Updated: 2025-03-06 18:22
VLAI
Summary
XXE in PHPSpreadsheet's XLSX reader
Details

Summary

The XmlScanner class has a scan method which should prevent XXE attacks.

However, we found another bypass than the previously reported CVE-2024-47873, the regexes from the findCharSet method, which is used for determining the current encoding can be bypassed by using a payload in the encoding UTF-7, and adding at end of the file a comment with the value encoding="UTF-8" with ", which is matched by the first regex, so that encoding='UTF-7' with single quotes ' in the XML header is not matched by the second regex: 

 $patterns = [
            '/encoding\\s*=\\s*"([^"]*]?)"/',
            "/encoding\\s*=\\s*'([^']*?)'/",
        ];

A payload for the workbook.xml file can for example be created with CyberChef&input=Pz4KPCFET0NUWVBFIGZvbyBbCiAgPCFFTEVNRU5UIGZvbyBBTlkgPgogIDwhRU5USVRZIHh4ZSBTWVNURU0gImZpbGU6Ly8vZXRjL3Bhc3N3ZCIgPl0%2BCjxmb28%2BJnh4ZTs8L2Zvbz4K). If you open an Excel file containing the payload from the link above stored in the workbook.xml file with PhpSpreadsheet, you will receive an HTTP request on 127.0.0.1:12345. You can test that an HTTP request is created by running the nc -nlvp 12345 command before opening the file containing the payload with PhpSpreadsheet.

To create the payload you need: 1. Create a file containing <?xml version = "1.0" encoding='UTF-7' in an XML file 2. Use the link attached above to create your XXE payload and add it to the XML file. 3. Add +ADw-+ACE---encoding="UTF-8"--+AD4- to the end of the XML file, which is matched by the first regex.

PoC

payload.xlsx

  • Create a new folder.
  • Run the composer require phpoffice/phpspreadsheet command in the new folder.
  • Create an index.php file in that folder with the following content:
<?php
require 'vendor/autoload.php';

use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;

$spreadsheet = new Spreadsheet();

$inputFileType = 'Xlsx';
$inputFileName = './payload.xlsx';

/**  Create a new Reader of the type defined in $inputFileType  **/
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
/**  Advise the Reader that we only want to load cell data  **/
$reader->setReadDataOnly(true);

$worksheetData = $reader->listWorksheetInfo($inputFileName);

foreach ($worksheetData as $worksheet) {

$sheetName = $worksheet['worksheetName'];

echo "<h4>$sheetName</h4>";
/**  Load $inputFileName to a Spreadsheet Object  **/
$reader->setLoadSheetsOnly($sheetName);
$spreadsheet = $reader->load($inputFileName);

$worksheet = $spreadsheet->getActiveSheet();
print_r($worksheet->toArray());

}

Impact

An attacker can bypass the sanitizer and achieve an XXE attack.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpoffice/phpspreadsheet"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.29.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpoffice/phpspreadsheet"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpoffice/phpspreadsheet"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.2.0"
            },
            {
              "fixed": "2.3.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpoffice/phpspreadsheet"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.3.0"
            },
            {
              "fixed": "3.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpoffice/phpexcel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.8.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-48917"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-11-18T20:01:46Z",
    "nvd_published_at": "2024-11-18T20:15:05Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\nThe [XmlScanner class](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php) has a [scan](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php#L72) method which should prevent XXE attacks.\n\nHowever, we found another bypass than the previously reported `CVE-2024-47873`, the regexes from the [findCharSet](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php#L51) method, which is used for determining the current encoding can be bypassed by using a payload in the encoding UTF-7, and adding at end of the file a comment with the value `encoding=\"UTF-8\"` with `\"`, which is matched by the first regex, so that `encoding=\u0027UTF-7\u0027` with single quotes `\u0027` in the XML header is not matched by the second regex: \n\n```\n $patterns = [\n            \u0027/encoding\\\\s*=\\\\s*\"([^\"]*]?)\"/\u0027,\n            \"/encoding\\\\s*=\\\\s*\u0027([^\u0027]*?)\u0027/\",\n        ];\n``` \n\nA payload for the `workbook.xml` file can for example be created with [CyberChef](https://gchq.github.io/CyberChef/#recipe=Encode_text(\u0027UTF-7%20(65000)\u0027)\u0026input=Pz4KPCFET0NUWVBFIGZvbyBbCiAgPCFFTEVNRU5UIGZvbyBBTlkgPgogIDwhRU5USVRZIHh4ZSBTWVNURU0gImZpbGU6Ly8vZXRjL3Bhc3N3ZCIgPl0%2BCjxmb28%2BJnh4ZTs8L2Zvbz4K).\nIf you open an Excel file containing the payload from the link above stored in the `workbook.xml` file with PhpSpreadsheet, you will receive an HTTP request on `127.0.0.1:12345`. You can test that an HTTP request is created by running the `nc -nlvp 12345` command before opening the file containing the payload with PhpSpreadsheet.\n\nTo create the payload you need:\n1. Create a file containing `\u003c?xml version = \"1.0\" encoding=\u0027UTF-7\u0027` in an XML file\n2. Use the link attached above to create your XXE payload and add it to the XML file. \n3. Add `+ADw-+ACE---encoding=\"UTF-8\"--+AD4-` to the end of the XML file, which is matched by the first regex. \n\n### PoC\n\n[payload.xlsx](https://github.com/user-attachments/files/17375792/payload.xlsx)\n\n- Create a new folder.\n- Run the `composer require phpoffice/phpspreadsheet` command in the new folder.\n- Create an `index.php` file in that folder with the following content:\n```PHP\n\u003c?php\nrequire \u0027vendor/autoload.php\u0027;\n\nuse PhpOffice\\PhpSpreadsheet\\Spreadsheet;\nuse PhpOffice\\PhpSpreadsheet\\Writer\\Xlsx;\n\n$spreadsheet = new Spreadsheet();\n\n$inputFileType = \u0027Xlsx\u0027;\n$inputFileName = \u0027./payload.xlsx\u0027;\n\n/**  Create a new Reader of the type defined in $inputFileType  **/\n$reader = \\PhpOffice\\PhpSpreadsheet\\IOFactory::createReader($inputFileType);\n/**  Advise the Reader that we only want to load cell data  **/\n$reader-\u003esetReadDataOnly(true);\n\n$worksheetData = $reader-\u003elistWorksheetInfo($inputFileName);\n\nforeach ($worksheetData as $worksheet) {\n\n$sheetName = $worksheet[\u0027worksheetName\u0027];\n\necho \"\u003ch4\u003e$sheetName\u003c/h4\u003e\";\n/**  Load $inputFileName to a Spreadsheet Object  **/\n$reader-\u003esetLoadSheetsOnly($sheetName);\n$spreadsheet = $reader-\u003eload($inputFileName);\n\n$worksheet = $spreadsheet-\u003egetActiveSheet();\nprint_r($worksheet-\u003etoArray());\n\n}\n```\n- Run the following command: `php -S 127.0.0.1:8080`\n- Add the [payload.xlsx](https://github.com/user-attachments/files/17375792/payload.xlsx) file in the folder and open \u003chttps://127.0.0.1:8080\u003e in a browser. You will see an HTTP request on netcat \u003chttp://127.0.0.1:12345/ext.dtd\u003e.\n\n### Impact\n\nAn attacker can bypass the sanitizer and achieve an [XXE attack](https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing).",
  "id": "GHSA-7cc9-j4mv-vcjp",
  "modified": "2025-03-06T18:22:21Z",
  "published": "2024-11-18T20:01:46Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-7cc9-j4mv-vcjp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-48917"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/PHPOffice/PhpSpreadsheet"
    },
    {
      "type": "WEB",
      "url": "https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php"
    },
    {
      "type": "WEB",
      "url": "https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing"
    }
  ],
  "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": "XXE in PHPSpreadsheet\u0027s XLSX reader"
}

GHSA-7CJ4-X7WR-QF2P

Vulnerability from github – Published: 2022-05-24 17:28 – Updated: 2022-10-01 00:00
VLAI
Details

An issue was discovered in Gradle Enterprise 2018.5 - 2020.2.4. There is XXE with resultant SSRF via an uploaded SAML IDP configuration.

Severity
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2020-15772"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-09-18T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in Gradle Enterprise 2018.5 - 2020.2.4. There is XXE with resultant SSRF via an uploaded SAML IDP configuration.",
  "id": "GHSA-7cj4-x7wr-qf2p",
  "modified": "2022-10-01T00:00:25Z",
  "published": "2022-05-24T17:28:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15772"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gradle/gradle/security/advisories"
    },
    {
      "type": "WEB",
      "url": "https://security.gradle.com/advisory/CVE-2020-15772"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-7FJR-GM4J-5R6Q

Vulnerability from github – Published: 2022-05-14 01:37 – Updated: 2022-05-14 01:37
VLAI
Details

An XML External Entity (XXE) vulnerability exists in the Charles 4.2.7 import/export setup option. If a user imports a "Charles Settings.xml" file from an attacker, an intranet network may be accessed and information may be leaked.

Severity
8.6 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2018-19244"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-11-13T06:29:00Z",
    "severity": "HIGH"
  },
  "details": "An XML External Entity (XXE) vulnerability exists in the Charles 4.2.7 import/export setup option. If a user imports a \"Charles Settings.xml\" file from an attacker, an intranet network may be accessed and information may be leaked.",
  "id": "GHSA-7fjr-gm4j-5r6q",
  "modified": "2022-05-14T01:37:50Z",
  "published": "2022-05-14T01:37:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-19244"
    },
    {
      "type": "WEB",
      "url": "https://whitehatck01.blogspot.com/2018/11/charles-427-xml-external-entity.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "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.

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