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)
-
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]
-
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.
-
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]
-
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.
-
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.
-
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]
-
Implementation
When running on a web server that supports case-insensitive filenames, perform case-insensitive evaluations of the extensions that are provided.
-
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
-
High 7.3
Tsinghua Unigroup Electronic Archives System uploadFile.html unrestricted upload
A vulnerability was determined in Tsinghua Unigroup Electronic Archives System up to 3.2.210802(62532). The impacted element is an unknown function of the file /Archive/ErecordManage/uploadFile.html. Executing a manipulation of the argument File can lead to u…
-
High 8.8
code-projects Scholars Tracking System 1.0 allows an authenticated attacker to achieve remote code execution via unrest…
-
High 8.8
DataStage on Cloud Pak for Data is vulnerable to arbitrary code injection due to runtime environment
IBM DataStage on Cloud Pak for Data could allow an authenticated user to execute arbitrary commands and gain access to sensitive information due to unrestricted file uploads.
-
High 8.8
Unrestricted Upload of File with Dangerous Type vulnerabilities exist in the rich text editor and document manage compo…
-
High 8.8
Flowring｜Agentflow - Arbitrary File Upload
Agentflow developed by Flowring 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.
-
High 8.7
Phar Deserialization leading to Arbitrary File Deletion in my little forum
my little forum is a PHP and MySQL based internet forum that displays the messages in classical threaded view. Prior to 20260208.1, the application fails to filter the phar:// protocol in URL validation, allowing attackers to upload a malicious Phar Polyglot …
-
High 8.8
Unrestricted File Upload in Birtech Information Technologies' Sensaway
Unrestricted Upload of File with Dangerous Type vulnerability in Birtech Information Technologies Industry and Trade Ltd. Co. Sensaway allows Upload a Web Shell to a Web Server. This issue affects Sensaway: through 09022026. NOTE: Because the product was deve…
-
High 7.3
detronetdip E-commerce addadhar.php unrestricted upload
A security flaw has been discovered in detronetdip E-commerce 1.0.0. This issue affects some unknown processing of the file /seller/assets/backend/profile/addadhar.php. Performing a manipulation of the argument File results in unrestricted upload. Remote expl…
-
High 7.3
code-projects Online Music Site AdminUpdateCategory.php unrestricted upload
A weakness has been identified in code-projects Online Music Site 1.0. Impacted is an unknown function of the file /Administrator/PHP/AdminUpdateCategory.php. This manipulation of the argument txtimage causes unrestricted upload. The attack is possible to be …
-
High 8.8
jizhiCMS 1.6.7 - Arbitrary File Download
jizhiCMS 1.6.7 contains a file download vulnerability in the admin plugins update endpoint that allows authenticated administrators to download arbitrary files. Attackers can exploit the vulnerability by sending crafted POST requests with malicious filepath a…
-
High 8.8CVE-2025-69906 Public exploit
Monstra CMS v3.0.4 contains an arbitrary file upload vulnerability in the Files Manager plugin. The application relies …
-
High 8.8
Cisco Meeting Management Arbitrary File Upload Vulnerability
A vulnerability in the Certificate Management feature of Cisco Meeting Management could allow an authenticated, remote attacker to upload arbitrary files, execute arbitrary commands, and elevate privileges to root on an affected system. This vulnerability is …
-
High 8.8
WP FOFT Loader <= 2.1.39 - Authenticated (Author+) Arbitrary File Upload
The WP FOFT Loader plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the 'WP_FOFT_Loader_Mimes::file_and_ext' function in all versions up to, and including, 2.1.39. This makes it possible for authenticated a…
-
High 8.6
School ERP Pro 1.0 Admin Profile Photo Upload Remote Code Execution Vulnerability
School ERP Pro 1.0 contains a remote code execution vulnerability that allows authenticated admin users to upload arbitrary PHP files as profile photos by bypassing file extension checks. Attackers can exploit improper file validation in pre-editstudent.inc.p…
-
High 8.8
Victor CMS 1.0 - Authenticated Arbitrary File Upload
Victor CMS 1.0 contains an authenticated file upload vulnerability that allows administrators to upload PHP files with arbitrary content through the user_image parameter. Attackers can upload a malicious PHP shell to the /img/ directory and execute system com…
-
High 8.8
GUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension Bypass
GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files. By renaming a PHP file to .php3 or .PhP, an attacker can upload a web shell and execute arbitrary code on the server. This vulnerability enables remo…
-
High 8.8
OS DataHub Maps <= 1.8.3 - Authenticated (Author+) Arbitrary File Upload
The OS DataHub Maps plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the 'OS_DataHub_Maps_Admin::add_file_and_ext' function in all versions up to, and including, 1.8.3. This makes it possible for authentica…
-
High 7.2
Form Maker by 10Web <= 1.15.35 - Unauthenticated Stored Cross-Site Scripting via SVG file
The Form Maker by 10Web plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 1.15.35. This is due to the plugin's default file upload allowlist including SVG files combined with weak substring-based extension…
-
High 7.5
FUXA contains an Unrestricted File Upload vulnerability
FUXA v1.2.7 contains an Unrestricted File Upload vulnerability in the `/api/upload` API endpoint. The endpoint lacks authentication mechanisms, allowing unauthenticated remote attackers to upload arbitrary files. This can be exploited to overwrite critical sy…
-
High 8.8
An arbitrary file upload vulnerability in the AddFont() function of FPDF v1.86 and earlier allows attackers to execute …
-
High 8.8
An unauthenticated user can upload arbitrary files to execute remote code, leading to privilege escalation in MagicInfo…
-
High 8.8
Koken CMS 0.22.24 - Arbitrary File Upload
Koken CMS 0.22.24 contains a file upload vulnerability that allows authenticated attackers to bypass file extension restrictions by renaming malicious PHP files. Attackers can upload PHP files with system command execution capabilities by manipulating the fil…
-
High 8.8
MedDream PACS Server 6.8.3.751 - Remote Code Execution
MedDream PACS Server 6.8.3.751 contains an authenticated remote code execution vulnerability that allows authorized users to upload malicious PHP files. Attackers can exploit the uploadImage.php endpoint by authenticating and uploading a PHP shell to execute …
-
High 8.5
NocoDB Vulnerable to Stored Cross-Site Scripting via SVG upload
NocoDB is software for building databases as spreadsheets. Prior to version 0.301.0, a stored cross-site scripting (XSS) vulnerability exists in NocoDB’s attachment handling mechanism. Authenticated users can upload malicious SVG files containing embedded Jav…
-
High 7.2
AI Engine <= 3.3.2 - Authenticated (Editor+) Arbitrary File Upload via 'filename' Parameter in update_media_metadata Endpoint
The AI Engine – The Chatbot and AI Framework for WordPress plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the `rest_helpers_update_media_metadata` function in all versions up to, and including, 3.3.2. This …
-
High 8.8
Victor CMS 1.0 - File Upload To RCE
Victor CMS 1.0 contains a file upload vulnerability that allows authenticated users to upload malicious PHP files through the profile image upload feature. Attackers can upload a PHP shell to the /img directory and execute system commands by accessing the upl…
-
High 7.5CVE-2026-0911 Public exploit
Hustle <= 7.8.9.2 - Authenticated (Subscriber+) Arbitrary File Upoload via Module Import
The Hustle – Email Marketing, Lead Generation, Optins, Popups plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the action_import_module() function in all versions up to, and including, 7.8.9.2. This makes i…
-
High 8.8
PhreeBooks 5.2.3 - Remote Code Execution
PhreeBooks 5.2.3 contains an authenticated file upload vulnerability in the Image Manager that allows remote code execution. Attackers can upload a malicious PHP web shell by exploiting unrestricted file type uploads to gain command execution on the server.
-
High 8.8
Textpattern 4.8.3 - Remote code execution
Textpattern versions prior to 4.8.3 contain an authenticated remote code execution vulnerability that allows logged-in users to upload malicious PHP files. Attackers can upload a PHP file with a shell command execution payload and execute arbitrary commands b…
-
High 8.1
Arbitrary File Upload in Solvera Software's Teknoera
Unrestricted Upload of File with Dangerous Type vulnerability in Solvera Software Services Trade Inc. Teknoera allows File Content Injection. This issue affects Teknoera: through 01102025.
-
High 8.5CVE-2026-23499 Public exploit
Saleor vulnerable to stored XSS via Unrestricted File Upload
Saleor is an e-commerce platform. Starting in version 3.0.0 and prior to versions 3.20.108, 3.21.43, and 3.22.27, Saleor allowed authenticated staff users or Apps to upload arbitrary files, including malicious HTML and SVG files containing Javascript. Dependi…
-
High 8.8
Multiple Vulnerabilities in IBM Concert Software
IBM Concert 1.0.0 through 2.1.0 is vulnerable to malicious file upload by not validating the content of the file uploaded to the web interface.
-
High 7.2
BROWAN COMMUNICATIONS ｜PrismX MX100 AP controller - Arbitrary File Upload
PrismX MX100 AP controller developed by BROWAN COMMUNICATIONS has an Arbitrary File Upload vulnerability, allowing privileged remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.
-
High 7.5
CVE-2025-14894
Livewire Filemanager, commonly used in Laravel applications, contains LivewireFilemanagerComponent.php, which does not perform file type and MIME validation, allowing for RCE through upload of a malicious php file that can then be executed via the /storage/ U…
-
High 8.8
All-in-One Video Gallery <= 4.5.7 - Authenticated (Author+) Arbitrary File Upload via VTT Upload Bypass
The All-in-One Video Gallery plugin for WordPress is vulnerable to arbitrary file upload in all versions up to, and including, 4.5.7. This is due to insufficient file type validation detecting VTT files, allowing double extension files to bypass sanitization …
-
High 8.8
WebsiteBaker 2.13.0 - Remote Code Execution (RCE) (Authenticated)
WebsiteBaker 2.13.0 contains an authenticated remote code execution vulnerability that allows users with language editing permissions to execute arbitrary code. Attackers can exploit the language installation endpoint by manipulating language installation par…
-
High 8.8
Chikitsa Patient Management System 2.0.2 - Remote Code Execution (RCE) (Authenticated)
Chikitsa Patient Management System 2.0.2 contains an authenticated remote code execution vulnerability that allows attackers to upload malicious PHP plugins through the module upload functionality. Authenticated attackers can generate and upload a ZIP plugin …
-
High 8.8
Chikitsa Patient Management System 2.0.2 - 'plugin' Remote Code Execution (RCE) (Authenticated)
Chikitsa Patient Management System 2.0.2 contains an authenticated remote code execution vulnerability in the backup restoration functionality. Authenticated attackers can upload a modified backup zip file with a malicious PHP shell to execute arbitrary syste…
-
High 8.8
Supreme Modules Lite <= 2.5.62 - Authenticated (Author+) Arbitrary File Upload via JSON Upload Bypass
The Supreme Modules Lite plugin for WordPress is vulnerable to arbitrary file upload in all versions up to, and including, 2.5.62. This is due to insufficient file type validation detecting JSON files, allowing double extension files to bypass sanitization wh…
-
High 8.8
File upload vulnerability in Omnispace Agora Project before 25.10 allowing authenticated, or under certain conditions a…