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
1,210 results · Clear filters · Feed
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High 7.2
e107 CMS v3.2.1 - Upload Restriction Bypass with Path Traversal File Override
e107 CMS version 3.2.1 contains a critical file upload vulnerability that allows authenticated administrators to override arbitrary server files through path traversal. The vulnerability exists in the Media Manager's remote URL upload functionality (image.php…
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High 8.8
WBCE CMS 1.5.2 - Remote Code Execution (RCE) (Authenticated)
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High 7.2
e107 CMS v3.2.1 - Upload restriction bypass (Authenticated [Admin])+ Server file override
e107 CMS version 3.2.1 contains a file upload vulnerability that allows authenticated administrators to override server files through the Media Manager import functionality. Attackers can exploit the upload mechanism by manipulating the upload URL parameter t…
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High 7.2
e107 CMS v3.2.1 - Admin Upload Restriction Bypass + RCE
e107 CMS version 3.2.1 contains a file upload vulnerability that allows authenticated administrative users to bypass upload restrictions and execute PHP files. Attackers can upload malicious PHP files to parent directories by manipulating the upload URL param…
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High 8.8
NanoCMS 0.4 - Remote Code Execution (RCE) (Authenticated)
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High 7.2
Authenticated Arbitrary File Upload Vulnerability in AOS-10 or AOS-8 Web-Based Management Interface
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High 7.3
Gin-vue-admin has arbitrary file upload vulnerability caused by path traversal
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High 8.8
An issue in Automai Director v.25.2.0 allows a remote attacker to execute arbitrary code via the update mechanism
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High 7.3CVE-2025-15503 Scanner template
Sangfor Operation and Maintenance Management System common.jsp unrestricted upload
A security flaw has been discovered in Sangfor Operation and Maintenance Management System up to 3.0.8. The impacted element is an unknown function of the file /fort/trust/version/common/common.jsp. Performing a manipulation of the argument File results in un…
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High 7.3CVE-2026-22241 Public exploit
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High 8.8
WP Enable WebP <= 1.0 - Authenticated (Author+) Arbitrary File Upload
The WP Enable WebP plugin for WordPress is vulnerable to arbitrary file uploads due to improper file type validation in the 'wpse_file_and_ext_webp' function in all versions up to, and including, 1.0. This makes it possible for authenticated attackers, with A…
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High 7.3
projectworlds House Rental and Property Listing Signup register.php unrestricted upload
A flaw has been found in projectworlds House Rental and Property Listing 1.0. Impacted is an unknown function of the file /app/register.php?action=reg of the component Signup. This manipulation of the argument image causes unrestricted upload. Remote exploita…
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High 8.8
Quanta Computer｜QOCA aim AI Medical Cloud Platform - Arbitrary File Upload
QOCA aim AI Medical Cloud Platform developed by Quanta Computer has an Arbitrary File Upload vulnerability, allowing authenticated remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.
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High 7.3
jackying H-ui.admin preview.php unrestricted upload
A vulnerability was identified in jackying H-ui.admin up to 3.1. This affects an unknown function in the library /lib/webuploader/0.1.5/server/preview.php. The manipulation leads to unrestricted upload. The attack is possible to be carried out remotely. The e…
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High 8.8
Priority - CWE-434 Unrestricted Upload of File with Dangerous Type
CWE-434 Unrestricted Upload of File with Dangerous Type
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High 7.7
Unrestricted File Upload and RCE in Innorix WP
Unrestricted Upload of File with Dangerous Type vulnerability in Innorix Innorix WP allows Upload a Web Shell to a Web Server.This issue affects Innorix WP from All versions If the "exam" directory exists under the directory where the product is installed (ex…
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High 7.3
jackq XCMS upload.php unrestricted upload
A flaw has been found in jackq XCMS up to 3fab5342cc509945a7ce1b8ec39d19f701b89261. This impacts an unknown function of the file Public/javascripts/admin/plupload-2.1.2/examples/upload.php. This manipulation causes unrestricted upload. It is possible to initi…
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High 8.8
Arbitrary File Upload in EchoCCS's Specto CM
Unrestricted Upload of File with Dangerous Type vulnerability in Echo Call Center Services Trade and Industry Inc. Specto CM allows Remote Code Inclusion. This issue affects Specto CM: before 17032025.
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High 8.8
WebTareas 2.4 Authenticated Remote Code Execution via File Upload
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High 8.1
Redirection for Contact Form 7 <= 3.2.7 - Unauthenticated Arbitrary File Copy via move_file_to_upload
The Redirection for Contact Form 7 plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'move_file_to_upload' function in all versions up to, and including, 3.2.7. This makes it possible for unauthenticated a…
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High 8.8
Flatnux 2021-03.25 Authenticated File Upload Remote Code Execution
Flatnux 2021-03.25 contains an authenticated file upload vulnerability that allows administrative users to upload arbitrary PHP files through the file manager. Attackers with admin credentials can upload malicious PHP scripts to the web root directory, enabli…
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High 8.8
Dotclear 2.25.3 Authenticated Remote Code Execution via File Upload
Dotclear 2.25.3 contains a remote code execution vulnerability that allows authenticated attackers to upload malicious PHP files with .phar extension through the blog post creation interface. Attackers can upload files containing PHP system commands that exec…
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High 8.8
Advantech WebAccess/SCADA Unrestricted Upload of File with Dangerous Type
Advantech WebAccess/SCADA is vulnerable to unrestricted file upload, which may allow an attacker to remotely execute arbitrary code.
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High 8.8
File Thingie 2.5.7 Authenticated Arbitrary File Upload Remote Code Execution
File Thingie 2.5.7 contains an authenticated file upload vulnerability that allows remote attackers to upload malicious PHP zip archives to the web server. Attackers can create a custom PHP payload, upload and unzip it, and then execute arbitrary system comma…
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High 8.8
Kentico Xperience <= 12.0.29 MVC Forms Unrestricted File Upload
An unrestricted file upload vulnerability in Kentico Xperience allows authenticated users with 'Read data' permissions to upload arbitrary file types via MVC form file uploader components. Attackers can manipulate file names and upload potentially malicious f…
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High 8.8
Serendipity 2.4.0 Authenticated Remote Code Execution via File Upload
Serendipity 2.4.0 contains a remote code execution vulnerability that allows authenticated attackers to upload malicious PHP files with .phar extension. Attackers can upload files with system command payloads to the media upload endpoint and execute arbitrary…
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High 8.8
UliCMS 2023.1-sniffing-vicuna Remote Code Execution via Avatar Upload
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High 8.8
ConvertX has Path Traversal that leads to Arbitrary File Write and Arbitrary Code Execution
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High 8.6
Blackcat CMS 1.4 Remote Code Execution via Jquery Plugin Manager
Blackcat CMS 1.4 contains a remote code execution vulnerability that allows authenticated administrators to upload malicious PHP files through the jquery plugin manager. Attackers can upload a zip file with a PHP shell script and execute arbitrary system comm…
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High 8.6
Perch CMS 3.2 Remote Code Execution via Unrestricted File Upload
Perch CMS 3.2 contains a remote code execution vulnerability that allows authenticated administrators to upload arbitrary PHP files through the assets management interface. Attackers can upload a malicious .phar file with embedded system command execution cap…
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High 8.6
Webutler v3.2 Remote Code Execution via Arbitrary File Upload
Webutler v3.2 contains a remote code execution vulnerability that allows authenticated administrators to upload PHP files with system command execution. Attackers can upload a PHAR file with embedded system commands to the media browser and execute arbitrary …
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High 8.7
WEBIGniter 28.7.23 Unrestricted File Upload Remote Code Execution
WEBIGniter 28.7.23 contains a file upload vulnerability that allows authenticated attackers to upload and execute dangerous PHP files through the media function. Attackers can leverage any created account to upload malicious PHP scripts that enable remote cod…
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High 8.7
Coppermine Gallery 1.6.25 Remote Code Execution via Plugin Upload
Coppermine Gallery 1.6.25 contains a remote code execution vulnerability that allows authenticated attackers to upload malicious PHP files through the plugin manager. Attackers can upload a zipped PHP file with system commands to the plugin directory and exec…
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High 8.8
FNT Command 13.4.0 is vulnerable to Code Execution via the C Base Module.
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High 8.3
FNT Command 13.4.0 is vulnerable to Directory Traversal.
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High 8.8
WP3D Model Import Viewer <= 1.0.7 - Authenticated (Contributor+) Arbitrary File Upload
The WP3D Model Import Viewer plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the handle_import_file() function in all versions up to, and including, 1.0.7. This makes it possible for authenticated attackers,…
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High 7.3
campcodes Online Student Enrollment System register.php unrestricted upload
A flaw has been found in campcodes Online Student Enrollment System 1.0. This impacts an unknown function of the file /admin/register.php. Executing a manipulation of the argument photo can lead to unrestricted upload. The attack can be launched remotely. The…
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High 8.8
Infility Global <= 2.14.42 - Authenticated (Subscriber+) Arbitrary File Upload
The Infility Global plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation and capability checks in all versions up to, and including, 2.14.42. This is due to the `upload_file` function in the `infility_import_file` c…
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High 8.6
WBCE CMS <= 1.6.3 Authenticated Remote Code Execution via Module Upload
WBCE CMS version 1.6.3 and prior contains an authenticated remote code execution vulnerability that allows administrators to upload malicious modules. Attackers can craft a specially designed ZIP module with embedded PHP reverse shell code to gain remote syst…
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High 8.6
xbtitFM 4.1.18 Insecure File Upload in file_hosting Feature
xbtitFM 4.1.18 contains an insecure file upload vulnerability that allows authenticated attackers with administrative privileges to upload and execute arbitrary PHP code through the file_hosting feature. Attackers can bypass file type restrictions by modifyin…