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 8.8
Blocksy Companion <= 2.1.19 - Authenticated (Author+) Arbitrary File Upload via SVG Upload Bypass
The Blocksy Companion plugin for WordPress is vulnerable to authenticated arbitrary file upload in all versions up to, and including, 2.1.19. This is due to insufficient file type validation detecting SVG files, allowing double extension files to bypass sanit…
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High 7.2
Hundred Plus｜EIP Plus - Arbitrary File Uplaod
EIP Plus developed by Hundred Plus has an Arbitrary File Uplaod vulnerability, allowing privileged remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.
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High 7.2
Mail Mint <= 1.18.10 - Authenticated (Admin+) Arbitrary File Upload
The Mail Mint plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the process_contact_attribute_import function in all versions up to, and including, 1.18.10. This makes it possible for authenticated attackers, …
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High 7.2CVE-2025-12399 Public exploit
Alex Reservations: Smart Restaurant Booking <= 2.2.3 - Authenticated (Admin+) Arbitrary File Upload
The Alex Reservations: Smart Restaurant Booking plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the /wp-json/srr/v1/app/upload/file REST endpoint in all versions up to, and including, 2.2.3. This makes it po…
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High 8.8
Smart Auto Upload Images <= 1.2.0 - Authenticated (Contributor+) Arbitrary File Upload
The Smart Auto Upload Images plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the auto-image creation functionality in all versions up to, and including, 1.2.0. This makes it possible for authenticated attack…
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High 8.4
Authenticated Arbitrary File Upload in Multiple WSO2 Products via SOAP Admin Services Leading to Remote Code Execution
An arbitrary file upload vulnerability exists in multiple WSO2 products due to insufficient validation of uploaded content and destination in SOAP admin services. A malicious actor with administrative privileges can upload a specially crafted file to a user-c…
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High 8.8
EM Beer Manager <= 3.2.3 - Authenticated (Subscriber+) Arbitrary File Upload
The EM Beer Manager plugin for WordPress is vulnerable to arbitrary file upload leading to remote code execution in all versions up to, and including, 3.2.3. This is due to missing file type validation in the EMBM_Admin_Untappd_Import_image() function and mis…
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High 8.3
Arbitrary code execution is possible due to improper validation of the file upload functionality in Eaton BLSS. This se…
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High 8.8
Delicious Recipes <= 1.9.0 - Authenticated (Contributor+) Arbitrary File Upload
The WP Delicious – Recipe Plugin for Food Bloggers (formerly Delicious Recipes) plugin for WordPress is vulnerable to arbitrary file uploads when importing recipes via CSV in all versions up to, and including, 1.9.0. This flaw allows an attacker with at least…
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High 8.8
RESTful Content Syndication 1.1.0 - 1.5.0 - Authenticated (Contributor+) Arbitrary File Upload
The RESTful Content Syndication plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the ingest_image() function in versions 1.1.0 to 1.5.0. This makes it possible for authenticated attackers, with Author-level a…
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High 8.0
ELOG file upload stored XSS
ELOG allows an authenticated user to upload arbitrary HTML files. The HTML content is executed in the context of other users when they open the file. Because ELOG includes usernames and password hashes in certain HTTP requests, an attacker can obtain the targ…
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High 8.7
Nagios XI < 5.7.2 Unrestricted File Upload via Audio Import Directory
Nagios XI versions prior to 5.7.2 allow PHP files to be uploaded to the Audio Import directory and executed from that location. The upload handler did not properly restrict file types or enforce storage outside of the webroot, and the web server permitted exe…
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High 7.3
code-projects Simple Food Ordering System addproduct.php unrestricted upload
A security flaw has been discovered in code-projects Simple Food Ordering System 1.0. This issue affects some unknown processing of the file /addproduct.php. Performing manipulation of the argument photo results in unrestricted upload. The attack may be initi…
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High 7.3
code-projects Simple Food Ordering System editproduct.php unrestricted upload
A security vulnerability has been detected in code-projects Simple Food Ordering System 1.0. Impacted is an unknown function of the file /editproduct.php. Such manipulation of the argument photo leads to unrestricted upload. The attack can be launched remotel…
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High 7.2
AIO Forms <= 1.3.18 - Authenticated (Admin+) Arbitrary File Upload via Zip Import
The AIO Forms – Craft Complex Forms Easily plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the import functionality in all versions up to, and including, 1.3.18. This makes it possible for authenticated atta…
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High 7.6
PerfreeBlog v4.0.11 has a File Upload vulnerability in the installTheme function
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High 7.6
PerfreeBlog v4.0.11 has a File Upload vulnerability in the installPlugin function
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High 7.2CVE-2025-60500 Public exploit
QDocs Smart School Management System 7.1 allows authenticated users with roles such as "accountant" or "admin" to bypas…
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High 8.8
TastyIgniter vulnerable to Cross-Site Scripting
Cross-Site Scripting (XSS) vulnerability exists in TastyIgniter 3.7.7, affecting the /admin/media_manager component. Attackers can upload a malicious SVG file containing JavaScript code. When an administrator previews the file, the code executes in their brow…
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High 7.2
Demo Import Kit <= 1.1.0 - Authenticated (Admin+) Arbitrary File Upload
The Demo Import Kit plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 1.1.0 via the import functionality. This makes it possible for authenticated attackers, with Administrat…
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High 7.2
DocoDoco Store Locator <= 1.0.1 - Authenticated (Editor+) Arbitrary File Upload
The DocoDoco Store Locator plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the zip upload functionality in all versions up to, and including, 1.0.1. This makes it possible for authenticated attackers, with E…
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High 8.6
FreePBX Endpoint Manager vulnerable to authenticated arbitrary file upload via fwbrand parameter
FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. In versions prior to 16.0.92 for FreePBX 16 and versions prior to 17.0.6 for FreePBX 17, the Endpoint Manager module contains an authenticated arbitrary file upload vuln…
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High 7.2
Authenticated Remote Code Execution Vulnerability in AOS-10 GW and AOS-8 Controller/Mobility Conductor Web-Based Management Interface via Arbitrary File Write
An arbitrary file write vulnerability exists in the web-based management interface of both the AOS-10 GW and AOS-8 Controller/Mobility Conductor operating systems. Successful exploitation could allow an authenticated malicious actor to upload arbitrary files …
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High 7.2
Ragic｜Enterprise Cloud Database - Arbitrary File Upload
Enterprise Cloud Database developed by Ragic 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.
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High 7.3
ProjectsAndPrograms School Management System uploadSllyabus.php unrestricted upload
A vulnerability has been found in ProjectsAndPrograms School Management System up to 6b6fae5426044f89c08d0dd101c7fa71f9042a59. Affected by this issue is some unknown functionality of the file /assets/uploadSllyabus.php. Such manipulation of the argument File …
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High 7.3
ProjectsAndPrograms School Management System uploadNotes.php unrestricted upload
A flaw has been found in ProjectsAndPrograms School Management System up to 6b6fae5426044f89c08d0dd101c7fa71f9042a59. Affected by this vulnerability is an unknown functionality of the file /assets/uploadNotes.php. This manipulation of the argument File causes…
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High 7.3
ProjectsAndPrograms School Management System changeSllyabus.php unrestricted upload
A vulnerability was detected in ProjectsAndPrograms School Management System up to 6b6fae5426044f89c08d0dd101c7fa71f9042a59. Affected is an unknown function of the file /assets/changeSllyabus.php. The manipulation of the argument File results in unrestricted …
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High 7.3
ProjectsAndPrograms School Management System createNotice.php unrestricted upload
A security vulnerability has been detected in ProjectsAndPrograms School Management System up to 6b6fae5426044f89c08d0dd101c7fa71f9042a59. This impacts an unknown function of the file /assets/createNotice.php. The manipulation of the argument File leads to un…
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High 7.3
ProjectsAndPrograms School Management System editNotes.php unrestricted upload
A weakness has been identified in ProjectsAndPrograms School Management System up to 6b6fae5426044f89c08d0dd101c7fa71f9042a59. This affects an unknown function of the file /assets/editNotes.php. Executing manipulation of the argument File can lead to unrestri…
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High 8.8
Newforma Info Exchange (NIX) insecure file upload
Newforma Info Exchange (NIX) '/UserWeb/Common/UploadBlueimp.ashx' allows an authenticated attacker to upload an arbitrary file to any location writable by the NIX application. An attacker can upload and run a web shell or other content executable by the web s…
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High 7.3
code-projects Student Crud Operation Add Student Page/Edit Student add.php move_uploaded_file unrestricted upload
A vulnerability was found in code-projects Student Crud Operation up to 3.3. This vulnerability affects the function move_uploaded_file of the file add.php of the component Add Student Page/Edit Student Page. Performing manipulation results in unrestricted up…
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High 8.3CVE-2025-61687 EPSS 12%
FlowiseAI/Flosise has File Upload vulnerability
Flowise is a drag & drop user interface to build a customized large language model flow. A file upload vulnerability in version 3.0.7 of FlowiseAI allows authenticated users to upload arbitrary files without proper validation. This enables attackers to persis…
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High 7.3
Tipray 厦门天锐科技股份有限公司 Data Leakage Prevention System 天锐数据泄露防护系统 uploadWxFile.do unrestricted upload
A security flaw has been discovered in Tipray 厦门天锐科技股份有限公司 Data Leakage Prevention System 天锐数据泄露防护系统 1.0. This vulnerability affects unknown code of the file uploadWxFile.do. The manipulation of the argument File results in unrestricted upload. The attack may…
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High 8.8
AP Background 3.8.1 - 3.8.2 - Missing Authorization to Authenticated (Subscriber+) Arbitrary File Upload via advParallaxBackAdminSaveSlider Function
The AP Background plugin for WordPress is vulnerable to arbitrary file uploads due to missing authorization and insufficient file validation within the advParallaxBackAdminSaveSlider() handler in versions 3.8.1 to 3.8.2. This makes it possible for authenticat…
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High 7.5
WP Dispatcher <= 1.2.0 - Authenticated (Subscriber+) Arbitrary File Upload
The WP Dispatcher plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the wp_dispatcher_process_upload() function in all versions up to, and including, 1.2.0. This makes it possible for authenticated attackers, …
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High 8.6
LangBot has a cross-directory file upload vulnerability, which could lead to system takeover
LangBot is a global IM bot platform designed for LLMs. In versions 4.1.0 up to but not including 4.3.5, authorized attackers can exploit the /api/v1/files/documents interface to perform arbitrary file uploads. Since this interface does not strictly restrict t…
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High 8.8
Remote Code Execution in MarkAny SafePC Enterprise
An attacker can obtain server information using Path Traversal vulnerability to conduct SQL Injection, which possibly exploits Unrestricted Upload of File with Dangerous Type vulnerability in MarkAny SafePC Enterprise on Windows, Linux.This issue affects Safe…
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High 8.8
Remote Code Execution in GTONE ChangeFlow
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), Unrestricted Upload of File with Dangerous Type vulnerability in GTONE ChangeFlow allows Path Traversal, Accessing Functionality Not Properly Constrained by ACLs.This issue affect…
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High 8.8CVE-2025-56515 Public exploit
Fiora chat group avatar is vulnerable to XSS via SVG files
File upload vulnerability in Fiora chat application 1.0.0 through user avatar upload functionality. The application fails to validate SVG file content, allowing malicious SVG files with embedded foreignObject elements containing iframe tags and JavaScript eve…
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High 8.6
Unrestricted uploading of dangerous file types to AvePoint products
Unrestricted file upload vulnerability in DocAve 6.13.2, Perimeter 1.12.3, Compliance Guardian 4.7.1, and earlier versions, allowing administrator users to upload files without proper validation. An attacker could exploit this vulnerability by uploading malic…