Common Weakness Enumeration

CWE-94

Allowed-with-Review

Improper Control of Generation of Code ('Code Injection')

Abstraction: Base · Status: Draft

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

8287 vulnerabilities reference this CWE, most recent first.

GHSA-H75M-HFPM-QX46

Vulnerability from github – Published: 2022-05-01 07:44 – Updated: 2022-05-01 07:44
VLAI
Details

Multiple PHP remote file inclusion vulnerabilities in phpBurningPortal quiz-modul 1.0.1, and possibly earlier, allow remote attackers to execute arbitrary PHP code via a URL in the lang_path parameter to (1) quest_delete.php, (2) quest_edit.php, or (3) quest_news.php.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2006-7102"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2007-03-03T21:19:00Z",
    "severity": "HIGH"
  },
  "details": "Multiple PHP remote file inclusion vulnerabilities in phpBurningPortal quiz-modul 1.0.1, and possibly earlier, allow remote attackers to execute arbitrary PHP code via a URL in the lang_path parameter to (1) quest_delete.php, (2) quest_edit.php, or (3) quest_news.php.",
  "id": "GHSA-h75m-hfpm-qx46",
  "modified": "2022-05-01T07:44:46Z",
  "published": "2022-05-01T07:44:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2006-7102"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/29558"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/2563"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/20547"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-H779-M55X-X42Q

Vulnerability from github – Published: 2025-09-24 15:31 – Updated: 2025-09-24 15:31
VLAI
Details

NVIDIA Megatron-LM for all platforms contains a vulnerability in the msdp preprocessing script where malicious data created by an attacker may cause an injection. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, Information disclosure, and data tampering.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-23353"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-24T14:15:49Z",
    "severity": "HIGH"
  },
  "details": "NVIDIA Megatron-LM for all platforms contains a vulnerability in the msdp preprocessing script where malicious data created by an attacker may cause an injection. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, Information disclosure, and data tampering.",
  "id": "GHSA-h779-m55x-x42q",
  "modified": "2025-09-24T15:31:14Z",
  "published": "2025-09-24T15:31:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-23353"
    },
    {
      "type": "WEB",
      "url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5698"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-23353"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-H78C-2562-6C4V

Vulnerability from github – Published: 2022-05-01 07:01 – Updated: 2022-05-01 07:01
VLAI
Details

PHP remote file inclusion vulnerability in Basic Analysis and Security Engine (BASE) 1.2.4 and earlier, with register_globals enabled, allows remote attackers to execute arbitrary PHP code via a URL in the BASE_path parameter to (1) base_qry_common.php, (2) base_stat_common.php, and (3) includes/base_include.inc.php.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2006-2685"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2006-05-31T10:06:00Z",
    "severity": "MODERATE"
  },
  "details": "PHP remote file inclusion vulnerability in Basic Analysis and Security Engine (BASE) 1.2.4 and earlier, with register_globals enabled, allows remote attackers to execute arbitrary PHP code via a URL in the BASE_path parameter to (1) base_qry_common.php, (2) base_stat_common.php, and (3) includes/base_include.inc.php.",
  "id": "GHSA-h78c-2562-6c4v",
  "modified": "2022-05-01T07:01:24Z",
  "published": "2022-05-01T07:01:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2006-2685"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/26652"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/1823"
    },
    {
      "type": "WEB",
      "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=370576"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/20300"
    },
    {
      "type": "WEB",
      "url": "http://sourceforge.net/forum/forum.php?forum_id=577228"
    },
    {
      "type": "WEB",
      "url": "http://www.osvdb.org/25770"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/18298"
    },
    {
      "type": "WEB",
      "url": "http://www.vupen.com/english/advisories/2006/1996"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-H78C-F929-FMWG

Vulnerability from github – Published: 2022-05-17 01:48 – Updated: 2022-05-17 01:48
VLAI
Details

Multiple PHP remote file inclusion vulnerabilities in Nova CMS allow remote attackers to execute arbitrary PHP code via a URL in the (1) fileType parameter to optimizer/index.php, (2) id parameter to administrator/modules/moduleslist.php, (3) filename parameter to includes/function/gets.php, or (4) conf[blockfile] parameter to includes/function/usertpl.php.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2012-1200"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2012-02-18T00:55:00Z",
    "severity": "HIGH"
  },
  "details": "Multiple PHP remote file inclusion vulnerabilities in Nova CMS allow remote attackers to execute arbitrary PHP code via a URL in the (1) fileType parameter to optimizer/index.php, (2) id parameter to administrator/modules/moduleslist.php, (3) filename parameter to includes/function/gets.php, or (4) conf[blockfile] parameter to includes/function/usertpl.php.",
  "id": "GHSA-h78c-f929-fmwg",
  "modified": "2022-05-17T01:48:24Z",
  "published": "2022-05-17T01:48:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2012-1200"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/73159"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.org/files/109669/Nova-CMS-Remote-File-Inclusion.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/51976"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-H78Q-JXM5-WH6G

Vulnerability from github – Published: 2022-05-01 23:33 – Updated: 2022-05-01 23:33
VLAI
Details

Multiple PHP remote file inclusion vulnerabilities in LookStrike Lan Manager 0.9 allow remote attackers to execute arbitrary PHP code via a URL in the sys_conf[path][real] parameter to (1) modules\class\Table.php; (2) db_admins.php, (3) db_alert.php, (4) db_double.php, (5) db_games.php, (6) db_matches.php, (7) db_match_teams.php, (8) db_news.php, (9) db_platform.php, (10) db_players.php, (11) db_server_group.php, (12) db_server_ip.php, (13) db_teams.php, (14) db_team_players.php, (15) db_tournaments.php, (16) db_tournament_teams.php, and (17) db_trees.php in modules\class\db\; and (18) Match.php, (19) MatchTeam.php, (20) Rule.php, (21) RuleBuilder.php, (22) RulePool.php, (23) RuleSingle.php, (24) RuleTree.php, (25) Tournament.php, (26) TournamentTeam.php, (27) Tree.php, and (28) TreeSingle.php in modules\class\tournament. NOTE: this can also be leveraged to include and execute arbitrary local files via directory traversal sequences.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2008-0803"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2008-02-15T22:00:00Z",
    "severity": "HIGH"
  },
  "details": "Multiple PHP remote file inclusion vulnerabilities in LookStrike Lan Manager 0.9 allow remote attackers to execute arbitrary PHP code via a URL in the sys_conf[path][real] parameter to (1) modules\\class\\Table.php; (2) db_admins.php, (3) db_alert.php, (4) db_double.php, (5) db_games.php, (6) db_matches.php, (7) db_match_teams.php, (8) db_news.php, (9) db_platform.php, (10) db_players.php, (11) db_server_group.php, (12) db_server_ip.php, (13) db_teams.php, (14) db_team_players.php, (15) db_tournaments.php, (16) db_tournament_teams.php, and (17) db_trees.php in modules\\class\\db\\; and (18) Match.php, (19) MatchTeam.php, (20) Rule.php, (21) RuleBuilder.php, (22) RulePool.php, (23) RuleSingle.php, (24) RuleTree.php, (25) Tournament.php, (26) TournamentTeam.php, (27) Tree.php, and (28) TreeSingle.php in modules\\class\\tournament\\.  NOTE: this can also be leveraged to include and execute arbitrary local files via directory traversal sequences.",
  "id": "GHSA-h78q-jxm5-wh6g",
  "modified": "2022-05-01T23:33:24Z",
  "published": "2022-05-01T23:33:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2008-0803"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/40519"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/5121"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-H792-M9GX-73F2

Vulnerability from github – Published: 2026-07-13 12:35 – Updated: 2026-07-13 12:35
VLAI
Details

Improper Control of Generation of Code ('Code Injection') vulnerability in Realtyna Realtyna Organic IDX plugin real-estate-listing-realtyna-wpl allows Remote Code Inclusion.This issue affects Realtyna Organic IDX plugin: from n/a through <= 5.2.0.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-57811"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-13T10:16:45Z",
    "severity": "CRITICAL"
  },
  "details": "Improper Control of Generation of Code (\u0027Code Injection\u0027) vulnerability in Realtyna Realtyna Organic IDX plugin real-estate-listing-realtyna-wpl allows Remote Code Inclusion.This issue affects Realtyna Organic IDX plugin: from n/a through \u003c= 5.2.0.",
  "id": "GHSA-h792-m9gx-73f2",
  "modified": "2026-07-13T12:35:05Z",
  "published": "2026-07-13T12:35:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57811"
    },
    {
      "type": "WEB",
      "url": "https://patchstack.com/database/Wordpress/Plugin/real-estate-listing-realtyna-wpl/vulnerability/wordpress-realtyna-organic-idx-plugin-plugin-5-2-0-remote-code-execution-rce-vulnerability?_s_id=cve"
    }
  ],
  "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"
    }
  ]
}

GHSA-H7H8-8QRF-FRJ7

Vulnerability from github – Published: 2022-05-17 01:39 – Updated: 2022-05-17 01:39
VLAI
Details

Multiple PHP remote file inclusion vulnerabilities in SAPID CMS 1.2.3 Stable allow remote attackers to execute arbitrary PHP code via a URL in the (1) GLOBALS[root_path] parameter to usr/extensions/get_tree.inc.php or (2) root_path parameter to usr/extensions/get_infochannel.inc.php.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2012-5293"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2012-10-04T16:55:00Z",
    "severity": "HIGH"
  },
  "details": "Multiple PHP remote file inclusion vulnerabilities in SAPID CMS 1.2.3 Stable allow remote attackers to execute arbitrary PHP code via a URL in the (1) GLOBALS[root_path] parameter to usr/extensions/get_tree.inc.php or (2) root_path parameter to usr/extensions/get_infochannel.inc.php.",
  "id": "GHSA-h7h8-8qrf-frj7",
  "modified": "2022-05-17T01:39:53Z",
  "published": "2022-05-17T01:39:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2012-5293"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/72238"
    },
    {
      "type": "WEB",
      "url": "http://www.exploit-db.com/exploits/18342"
    },
    {
      "type": "WEB",
      "url": "http://www.osvdb.org/82475"
    },
    {
      "type": "WEB",
      "url": "http://www.osvdb.org/82476"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/51323"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-H7H9-WG3C-H4WV

Vulnerability from github – Published: 2023-06-02 06:30 – Updated: 2024-04-04 04:28
VLAI
Details

An issue was discovered in South River Technologies TitanFTP NextGen server that allows for a vertical privilege escalation leading to remote code execution.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-27744"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-06-02T04:15:49Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in South River Technologies TitanFTP NextGen server that allows for a vertical privilege escalation leading to remote code execution.",
  "id": "GHSA-h7h9-wg3c-h4wv",
  "modified": "2024-04-04T04:28:14Z",
  "published": "2023-06-02T06:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27744"
    },
    {
      "type": "WEB",
      "url": "https://www.southrivertech.com/software/nextgen/titanftp/en/relnotes.pdf"
    },
    {
      "type": "WEB",
      "url": "https://www.whiteoaksecurity.com/blog/titanftp-vulnerability-disclosure"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-H7JV-6W8R-CCF2

Vulnerability from github – Published: 2022-01-12 00:01 – Updated: 2024-11-14 21:31
VLAI
Details

Microsoft SharePoint Server Remote Code Execution Vulnerability.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-21837"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-01-11T21:15:00Z",
    "severity": "HIGH"
  },
  "details": "Microsoft SharePoint Server Remote Code Execution Vulnerability.",
  "id": "GHSA-h7jv-6w8r-ccf2",
  "modified": "2024-11-14T21:31:43Z",
  "published": "2022-01-12T00:01:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-21837"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21837"
    },
    {
      "type": "WEB",
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21837"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-H7M6-3V2J-JM33

Vulnerability from github – Published: 2024-05-03 03:30 – Updated: 2024-05-03 03:30
VLAI
Details

PaperCut NG External User Lookup Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PaperCut NG. Authentication is required to exploit this vulnerability.

The specific flaw exists within the External User Lookup functionality. The issue results from the lack of proper validation of a user-supplied string before using it to execute Java code. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-21013.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-39469"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-03T03:15:12Z",
    "severity": "HIGH"
  },
  "details": "PaperCut NG External User Lookup Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PaperCut NG. Authentication is required to exploit this vulnerability.\n\nThe specific flaw exists within the External User Lookup functionality. The issue results from the lack of proper validation of a user-supplied string before using it to execute Java code. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-21013.",
  "id": "GHSA-h7m6-3v2j-jm33",
  "modified": "2024-05-03T03:30:56Z",
  "published": "2024-05-03T03:30:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-39469"
    },
    {
      "type": "WEB",
      "url": "https://www.papercut.com/kb/Main/SecurityBulletinJuly2023"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1285"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Mitigation
Architecture and Design

Strategy: Refactoring

Refactor your program so that you do not have to dynamically generate code.

Mitigation
Architecture and Design
  • Run your code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which code can be executed by your product.
  • Examples include the Unix chroot jail and AppArmor. In general, managed code may provide some protection.
  • This may not be a feasible solution, and it only limits the impact to the operating system; the rest of your application may still be subject to compromise.
  • Be careful to avoid CWE-243 and other weaknesses related to jails.
Mitigation MIT-5
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
  • To reduce the likelihood of code injection, use stringent allowlists that limit which constructs are allowed. If you are dynamically constructing code that invokes a function, then verifying that the input is alphanumeric might be insufficient. An attacker might still be able to reference a dangerous function that you did not intend to allow, such as system(), exec(), or exit().
Mitigation
Testing

Use dynamic tools and techniques that interact with the product using large test suites with many diverse inputs, such as fuzz testing (fuzzing), robustness testing, and fault injection. The product's operation may slow down, but it should not become unstable, crash, or generate incorrect results.

Mitigation MIT-32
Operation

Strategy: Compilation or Build Hardening

Run the code in an environment that performs automatic taint propagation and prevents any command execution that uses tainted variables, such as Perl's "-T" switch. This will force the program to perform validation steps that remove the taint, although you must be careful to correctly validate your inputs so that you do not accidentally mark dangerous inputs as untainted (see CWE-183 and CWE-184).

Mitigation MIT-32
Operation

Strategy: Environment Hardening

Run the code in an environment that performs automatic taint propagation and prevents any command execution that uses tainted variables, such as Perl's "-T" switch. This will force the program to perform validation steps that remove the taint, although you must be careful to correctly validate your inputs so that you do not accidentally mark dangerous inputs as untainted (see CWE-183 and CWE-184).

Mitigation
Implementation

For Python programs, it is frequently encouraged to use the ast.literal_eval() function instead of eval, since it is intentionally designed to avoid executing code. However, an adversary could still cause excessive memory or stack consumption via deeply nested structures [REF-1372], so the python documentation discourages use of ast.literal_eval() on untrusted data [REF-1373].

CAPEC-242: Code Injection

An adversary exploits a weakness in input validation on the target to inject new code into that which is currently executing. This differs from code inclusion in that code inclusion involves the addition or replacement of a reference to a code file, which is subsequently loaded by the target and used as part of the code of some application.

CAPEC-35: Leverage Executable Code in Non-Executable Files

An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.

CAPEC-77: Manipulating User-Controlled Variables

This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An adversary can override variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the adversary can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.