Weakness (CWE)
CWE-434: Unrestricted Upload of File with Dangerous Type
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
How to prevent it (8 mitigations)
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Architecture and Design
Generate a new, unique filename for an uploaded file instead of using the user-supplied filename, so that no external input is used at all.[REF-422] [REF-423]
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Architecture and Design
When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
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Architecture and Design
Consider storing the uploaded files outside of the web document root entirely. Then, use other mechanisms to deliver the files dynamically. [REF-423]
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Implementation
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.
For example, limiting filenames to alphanumeric characters can help to restrict the introduction of unintended file extensions.
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Architecture and Design
Define a very limited set of allowable extensions and only generate filenames that end in these extensions. Consider the possibility of XSS (CWE-79) before allowing .html or .htm file types.
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Implementation
Ensure that only one extension is used in the filename. Some web servers, including some versions of Apache, may process files based on inner extensions so that "filename.php.gif" is fed to the PHP interpreter.[REF-422] [REF-423]
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Implementation
When running on a web server that supports case-insensitive filenames, perform case-insensitive evaluations of the extensions that are provided.
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Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Source: MITRE CWE-434
3,441 results · Feed
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High 8.8
Ventem｜e-School - Arbitrary File Upload
The e-School from Ventem has a Arbitrary File Upload vulnerability, allowing unauthenticated remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.
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High 8.8CVE-2025-54769 Public exploit
KL-001-2025-016: Xorux LPAR2RRD File Upload Directory Traversal
An authenticated, read-only user can upload a file and perform a directory traversal to have the uploaded file placed in a location of their choosing. This can be used to overwrite existing PERL modules within the application to achieve remote code execution …
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Medium 4.7
299Ko CMS File Management view unrestricted upload
A vulnerability classified as critical has been found in 299Ko CMS 2.0.0. This affects an unknown part of the file /admin/filemanager/view of the component File Management. The manipulation leads to unrestricted upload. It is possible to initiate the attack r…
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Medium 6.3
code-projects Online Ordering System product.php unrestricted upload
A vulnerability classified as critical has been found in code-projects Online Ordering System 1.0. Affected is an unknown function of the file /admin/product.php. The manipulation of the argument image leads to unrestricted upload. It is possible to launch th…
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High 7.3
code-projects Exam Form Submission register.php unrestricted upload
A vulnerability was found in code-projects Exam Form Submission 1.0. It has been rated as critical. This issue affects some unknown processing of the file /register.php. The manipulation of the argument image leads to unrestricted upload. The attack may be in…
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Medium 6.3
code-projects Voting System candidates_add.php unrestricted upload
A vulnerability was found in code-projects Voting System 1.0 and classified as critical. Affected by this issue is some unknown functionality of the file /admin/candidates_add.php. The manipulation of the argument photo leads to unrestricted upload. The attac…
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Medium 6.3
code-projects Document Management System insert.php unrestricted upload
A vulnerability, which was classified as critical, has been found in code-projects Document Management System 1.0. This issue affects some unknown processing of the file /insert.php. The manipulation of the argument uploaded_file leads to unrestricted upload.…
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High 8.5
Unrestricted Upload of File with Dangerous Type vulnerability in Salesforce Tableau Server on Windows, Linux (Extensibl…
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High 8.4CVE-2014-125119 Public exploit
WinRAR < 5.00 Filename Spoofing RCE
A filename spoofing vulnerability exists in WinRAR when opening specially crafted ZIP archives. The issue arises due to inconsistencies between the Central Directory and Local File Header entries in ZIP files. When viewed in WinRAR, the file name from the Cen…
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High 8.6
Hanwha Techwin SSM 1.32 & 1.4 ActiveMQ File Upload RCE
A client-side remote code execution vulnerability exists in Hanwha Techwin Smart Security Manager (SSM) versions 1.32 and 1.4, due to improper restrictions on the PUT method exposed by the bundled Apache ActiveMQ instance (running on port 8161). An attacker c…
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Critical 9.3CVE-2014-125116 Public exploit
HybridAuth 2.0.9 - 2.2.2 Unauthenticated RCE via install.php Configuration Injection
A remote code execution vulnerability exists in HybridAuth versions 2.0.9 through 2.2.2 due to insecure use of the install.php installation script. The script remains accessible after deployment and fails to sanitize input before writing to the application’s …
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High 8.7CVE-2013-10032 Public exploit
GetSimple CMS 3.2.1 Authenticated RCE via Arbitrary PHP File Upload
An authenticated remote code execution vulnerability exists in GetSimpleCMS version 3.2.1. The application’s upload.php endpoint allows authenticated users to upload arbitrary files without proper validation of MIME types or extensions. By uploading a .pht fi…
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High 8.8
Droip < 2.5.2 - Authenticated (Subscriber+) Arbitrary File Upload
The Droip plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the make_google_font_offline() function in all versions up to, and excluding, 2.5.2. This makes it possible for authenticated attackers, with Subscri…
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Medium 6.3
zhousg letao product.js unrestricted upload
A vulnerability, which was classified as critical, has been found in zhousg letao up to 7d8df0386a65228476290949e0413de48f7fbe98. This issue affects some unknown processing of the file routes\bf\product.js. The manipulation of the argument pictrdtz leads to u…
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High 8.8CVE-2015-10144 Public exploit
Responsive Thumbnail Slider < 1.0.1 - Authenticated (Subscriber+) Arbitrary File Upload
The Responsive Thumbnail Slider plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type sanitization in the via the image uploader in versions up to 1.0.1. This makes it possible for authenticated attackers, with subscriber-level…
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Critical 10.0CVE-2025-5243 Public exploit
Arbitrary File Upload in SMG Software's Information Portal
Unrestricted Upload of File with Dangerous Type, Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in SMG Software Information Portal allows Code Injection, Upload a Web Shell to a Web Server, Code Inclus…
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Critical 9.8
Ebook Store <= 5.8012 - Unauthenticated Arbitrary File Upload
The Ebook Store plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the ebook_store_save_form function in all versions up to, and including, 5.8012. This makes it possible for unauthenticated attackers to upload…
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Critical 9.8
WPBookit <= 1.0.6 - Unauthenticated Arbitrary File Upload via image_upload_handle Function
The WPBookit plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the image_upload_handle() function hooked via the 'add_new_customer' route in all versions up to, and including, 1.0.6. The plugin’s image‐upload …
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Critical 9.3
osCommerce 2.3.4.1 Installer Unauthenticated Configuration File Injection PHP Code Execution
A remote code execution vulnerability exists within osCommerce Online Merchant version 2.3.4.1 due to insecure default configuration and missing authentication in the installer workflow. By default, the /install/ directory remains accessible after installatio…
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Critical 9.1
An authenticated arbitrary file upload vulnerability exists in the SMA 100 series web management interface. A remote at…
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High 8.8CVE-2025-54439 EPSS 13%
Unrestricted Upload of File with Dangerous Type vulnerability in Samsung Electronics MagicINFO 9 Server allows Code Inj…
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Critical 9.8
Unrestricted Upload of File with Dangerous Type vulnerability in Samsung Electronics MagicINFO 9 Server allows Code Inj…
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Critical 9.8
Unrestricted Upload of File with Dangerous Type vulnerability in Samsung Electronics MagicINFO 9 Server allows Code Inj…
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High 8.8CVE-2025-54441 EPSS 15%
Unrestricted Upload of File with Dangerous Type vulnerability in Samsung Electronics MagicINFO 9 Server allows Code Inj…
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Critical 9.8
Unrestricted Upload of File with Dangerous Type vulnerability in Samsung Electronics MagicINFO 9 Server allows Code Inj…
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High 8.1
Unrestricted Upload of File with Dangerous Type vulnerability in Samsung Electronics MagicINFO 9 Server allows Code Inj…
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Critical 9.8
Unrestricted Upload of File with Dangerous Type vulnerability in Samsung Electronics MagicINFO 9 Server allows Code Inj…
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Critical 9.8
Unrestricted Upload of File with Dangerous Type vulnerability in Samsung Electronics MagicINFO 9 Server allows Code Inj…
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High 7.1CVE-2025-46099 Public exploit
In Pluck CMS 4.7.20-dev, an authenticated attacker can upload or create a crafted PHP file under the albums module dire…
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High 7.5
A vulnerability in the Mitel 6800 Series, 6900 Series, and 6900w Series SIP Phones through 6.4 SP4 (R6.4.0.4006), and t…
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Critical 9.8CVE-2012-10020 Public exploit
FoxyPress <= 0.4.2.1 - Arbitrary File Upload
The FoxyPress plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the uploadify.php file in versions up to, and including, 0.4.2.1. This makes it possible for unauthenticated attackers to upload arbitrary files …
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Critical 9.8CVE-2015-10137 Public exploit
Website Contact Form With File Upload <= 1.3.4 - Arbitrary File Upload
The Website Contact Form With File Upload plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'upload_file()' function in versions up to, and including, 1.3.4. This makes it possible for unauthenticated atta…
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Medium 6.3
jerryshensjf JPACookieShop 蛋糕商城JPA版 GoodsController.java addGoods unrestricted upload
A vulnerability was found in jerryshensjf JPACookieShop 蛋糕商城JPA版 1.0. It has been classified as critical. Affected is the function addGoods of the file GoodsController.java. The manipulation leads to unrestricted upload. It is possible to launch the attack re…
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Critical 9.4
RomM's authenticated arbitrary file write vulnerability can lead to Remote Code Execution
RomM (ROM Manager) allows users to scan, enrich, browse and play their game collections with a clean and responsive interface. In versions 4.0.0-beta.3 and below, an authenticated arbitrary file write vulnerability exists in the /api/saves endpoint. This can …
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High 7.3
code-projects Church Donation System admin_pic.php unrestricted upload
A vulnerability was found in code-projects Church Donation System 1.0. It has been rated as critical. Affected by this issue is some unknown functionality of the file /members/admin_pic.php. The manipulation of the argument image leads to unrestricted upload.…
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Medium 6.6
Dell AppSync, version(s) 4.6.0.0, contains an Unrestricted Upload of File with Dangerous Type vulnerability. A high pri…
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High 8.1
nova-tiptap has an Unauthenticated Arbitrary File Upload Vulnerability
marshmallow-packages/nova-tiptap is a rich text editor for Laravel Nova based on tiptap. Prior to 5.7.0, a vulnerability was discovered in the marshmallow-packages/nova-tiptap Laravel Nova package that allows unauthenticated users to upload arbitrary files to…
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High 7.2
Simopro Technology｜WinMatrix3 Web package - Arbitrary File Upload
WinMatrix3 Web package developed by Simopro Technology has an Arbitrary File Upload vulnerability, allowing remote attackers with administrator privileges to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.
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Critical 9.8
In Netgear RAX30 V1.0.10.94, a PHP-FPM misconfiguration vulnerability is caused by not following the specification to o…
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Medium 6.3
yangzongzhuan RuoYi CommonController.java uploadFile unrestricted upload
A vulnerability was found in yangzongzhuan RuoYi up to 4.8.1 and classified as critical. This issue affects the function uploadFile of the file ruoyi-admin/src/main/java/com/ruoyi/web/controller/common/CommonController.java. The manipulation of the argument F…