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
1,145 results · Clear filters · Feed
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Critical 9.8
Ultimate Addons for Elementor Forms < 1.0.8 - Unauthenticated Arbitrary File Upload via 'type' Parameter
The Ultimate Addons for Elementor Forms WordPress plugin before 1.0.8 does not properly validate the extension of uploaded files in its bundled file upload field, allowing unauthenticated users to upload arbitrary files such as PHP scripts and achieve remote …
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Critical 9.8
Askany < 2.2.0 - Unauthenticated Arbitrary File Upload
The AskAny WordPress plugin before 2.2.0 does not validate the extension or content of files attached to chat messages, trusting the browser-supplied file type instead, which allows unauthenticated users to upload PHP files and execute arbitrary code when vis…
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Critical 10.0
Remote Code Execution via Unrestricted File Upload in WidzialniCMS
WidzialniCMS is vulnerable to Unrestricted File Upload in the /panel/upload.php endpoint. Due to a client-controlled permission check parameter and insufficient validation of the uploadPath parameter, an unauthenticated attacker can upload arbitrary files to …
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Critical 10.0CVE-2026-110468 Public exploit
Remote Code Execution via Unrestricted File Upload in WidzialniCMS
WidzialniCMS is vulnerable to Unrestricted File Upload in the /panel/controllers/save_photo.php endpoint. Due to a client-controlled permission check parameter and insufficient validation of the currentpath parameter, an unauthenticated attacker can upload ar…
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Critical 9.8
WP Duplicate <= 1.1.11 - Unauthenticated Arbitrary File Upload via Authentication Bypass
The WP Duplicate WordPress plugin through 1.1.11 does not properly verify a request authentication value and does not validate the path or type of uploaded files, making it possible for unauthenticated attackers to write arbitrary files to the server and achi…
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Critical 9.8
Contact Form 7 6.2 - 6.2.3 - Unauthenticated Arbitrary File Upload via Invalid UTF-8 Filename
The Contact Form 7 WordPress plugin before 6.2.4 does not validate the type or extension of files uploaded through a form file field, and a flaw in its temporary-file cleanup leaves the uploaded file on disk, allowing unauthenticated users to upload arbitrary…
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Critical 9.9
Multiple Vulnerabilities in IBM API Connect
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to execute arbitrary code due to insufficient validation of uploaded content. Content uploaded to the product is not sufficiently checked befo…
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Critical 9.8
payever – WooCommerce Gateway <= 4.8.0 - Unauthenticated Arbitrary File Upload Leading to Remote Code Execution
The payever – WooCommerce Gateway plugin for WordPress is vulnerable to arbitrary file upload leading to remote code execution in various versions up to, and including, 4.8.0. Three WooCommerce-API callbacks (payever_set_sandbox_api_keys, payever_toggle_subsc…
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Critical 10.0CVE-2026-118423 Public exploit
WP Libre Form 1.5.0.1 - Unauthenticated RCE via Arbitrary File Upload
The WP Libre Form WordPress plugin 1.5.0.1 does not validate the type of files uploaded through its form submissions, allowing unauthenticated attackers to upload PHP files to a web-accessible location and execute them, leading to remote code execution.
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Critical 9.0
In Yealink Plug-in Softwares before 2.35.219.0, there is an unauthorized file write vulnerability under specific scenar…
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Critical 9.8
Advanced Custom Fields: Extended PRO <= 0.9.2.6 - Unauthenticated Remote Code Execution via Dynamic Render Field Type
The Advanced Custom Fields: Extended PRO plugin for WordPress is vulnerable to Limited Code Injection in all versions up to, and including, 0.9.2.6 via the render_field function. This is due to insufficient validation of form configuration parameters before m…
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Critical 9.5
Joomla Extension - joomlaboat.com - Unauthenticated arbitrary file upload in Custom Tables < 3.7.8
Joomla Extension - joomlaboat.com - Unauthenticated arbitrary file upload in Custom Tables < 3.7.8 - An unauthenticated attacker can upload a polyglot file with an attacker-controlled extension to the web-accessible tmp directory of any Joomla site that expos…
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Critical 9.4
Joomla Extension - dj-extensions.com - Authenticated arbitrary file upload in DJ-Classifieds < 3.11.3
Joomla Extension - dj-extensions.com - Authenticated arbitrary file upload in DJ-Classifieds < 3.11.3 - The Joomla extension DJ-Classifieds is vulnerable to an unprivileged file upload, leading to full RCE.
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Critical 9.8
SimpleForm <= 3.10.2 - Unauthenticated Arbitrary File Upload via Trailing-Dot Filename via Unknown File Key in simpleform_get_submit_data
The SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.10.2 via the handle_upload function. This is due to missing server-side f…
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Critical 9.8CVE-2026-116512 Public exploit
Project Manager <= 4.1.1 - Unauthenticated Remote Code Execution via 'id' Parameter Function Injection
The Project Manager – AI Powered Project Management, Task Management, Kanban Board & Time Tracker plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4.1.1 via the 'id' parameter parameter. This is due to unsaniti…
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Critical 10.0
SOCFortress CoPilot: Arbitrary Host File Write as Root via Path Traversal in the ScoutSuite GCP Report Upload (RCE)
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Critical 9.1
Docat has Arbitrary File Upload exists in Upload API
Docat is a tool for hosting versioned static documentation. In the affected implementation, an arbitrary file upload vulnerability in the `Upload API` arises because the API does not validate the `uploaded file path or type`. An attacker can overwrite sensiti…
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Critical 9.1
Virtual Folder Path Confinement Bypass in Progress WS_FTP Server
A path traversal vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow a delegated Host Administrator to access locations outside their authorized scope, potentially enabling remote code execution.
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Critical 9.1
Host Administrator Path Containment Bypass in Progress WS_FTP Server
A path traversal vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow a delegated Host Administrator to access or modify files outside their authorized scope.
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Critical 9.8
Chat AI with Dispatcher < 2.4 - Unauthenticated Arbitrary File Upload
The Chat AI with Dispatcher WordPress plugin before 2.4 does not properly validate uploaded files, relying only on a spoofable client-supplied content type, allowing unauthenticated attackers to upload arbitrary files, including PHP, which can lead to remote …
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Critical 9.8
Contact Manager <= 9.1.2 - Unauthenticated Arbitrary File Upload via Trailing-Dot Filename Blacklist Bypass
The Contact Manager plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 9.1.2 via the add_message function. This is due to an incomplete extension blacklist that fails to detect dangerous extensions when a trailin…
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Critical 9.8CVE-2026-103688 Public exploit
Checkout Files Upload for WooCommerce < 2.4.0 - Unauthenticated Arbitrary File Upload
The Checkout Files Upload for WooCommerce WordPress plugin before 2.4.0 does not validate uploaded file types when its accepted file types setting is left empty, which it documents as the way to accept all files, allowing unauthenticated users to upload arbit…
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Critical 9.8
Pie Register Premium <= 3.8.4.0 - Unauthenticated Arbitrary File Upload via piereg_file_upload AJAX Handler
The Pie Register Premium plugin for WordPress is vulnerable to Unrestricted File Type Upload in all versions up to, and including, 3.8.4.0 via the piereg_file_upload function. This is due to the plugin performing file type validation via wp_check_filetype and…
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Critical 9.9
An unrestricted file upload vulnerability exists in the campaign import feature of Mautic 7. When processing an uploade…
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Critical 9.6
Part-DB: Authenticated RCE via .phar attachment upload served from public/media
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Critical 10.0CVE-2026-102785 Public exploit
Joomla Extension - yootheme.com - Unauthenticated remote code execution in YOOtheme Pro 5.0.0-5.0.52
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Critical 9.9
WordPress Mang Board WP plugin <= 2.4.4 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in Kitae Park Mang Board WP mangboard allows Upload a Web Shell to a Web Server.This issue affects Mang Board WP: from n/a through 2.4.4.
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Critical 10.0
WordPress WP Mailster plugin <= 1.9.1.0 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in WP Mailster WP Mailster wp-mailster allows Upload a Web Shell to a Web Server.This issue affects WP Mailster: from n/a through 1.9.1.0.
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Critical 9.8
HKUDS Vibe-Trading before 0.1.7 Missing Authentication in FastAPI Server Enabling RCE
HKUDS Vibe-Trading from 0.1.0 before 0.1.7 contains a missing authentication vulnerability that allows unauthenticated attackers to access the FastAPI surface because require_auth() returns early when API_AUTH_KEY is unset. Attackers can post messages to /ses…
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Critical 9.6
Eptura Archibus Workflow Rule Enables Unauthenticated Arbitrary File Upload Leading to Remote Code Execution
A user can upload export reports with any file contents and specify any contents. JSP code can be uploaded, JSPX can be specified as the file extension, and anyone can browse to the uploaded file, leading to command execution. The authentication bypass vulner…
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Critical 9.9
WordPress MapSVG plugin <= 8.16.1 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in PT Norther Lights Production MapSVG mapsvg-lite-interactive-vector-maps allows Upload a Web Shell to a Web Server.This issue affects MapSVG: from n/a through 8.16.1.
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Critical 9.8
ELEX WordPress HelpDesk & Customer Ticketing System <= 3.3.7 - Unauthenticated Arbitrary File Upload via IMAP Email Attachment
The ELEX WordPress HelpDesk & Customer Ticketing System plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.3.7 via the initMailPart function. This is due to insufficient file type validation when saving IMAP em…
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Critical 9.8
Mang Board - 2.4.4 - Unauthenticated Arbitrary File Upload via 'image_path' Parameter
The Mang Board plugin for WordPress is vulnerable to Arbitrary File Upload in version 2.4.4 via the mbw_file_upload function. This is due to missing file extension validation on the attacker-supplied image_path parameter, whose basename-derived file name bypa…
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Critical 9.1
EnergizeLab Eilik AI Skill Upload Unauthenticated Path Traversal Arbitrary File Write
The EnergizeLab Eilik and EilikO AI skill upload endpoint, served by the FastAPI AI inference and profiling services, does not require authentication and does not constrain uploaded file paths. An unauthenticated remote attacker can use path traversal to writ…
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Critical 9.8
10Web Booster <= 2.34.10 - Unauthenticated Arbitrary File Upload via 'page_id' Parameter
The 10Web Booster – Website speed optimization, Cache & Page Speed optimizer plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.34.10 via the compressCustom function. This is due to missing file type validation…
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Critical 9.8
JTL-Connector for WooCommerce <= 2.4.3 - Unauthenticated Arbitrary File Upload via 'image.push' Method
The JTL-Connector for WooCommerce plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.4.3 via the saveImage() function. This is due to the startSession() function accepting an empty jtlauth parameter as a valid …
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Critical 9.8
AGE-GATE <= 1.0 - Unauthenticated Remote Code Execution via PHP Code Injection via 'width'/'height' Parameters to Standalone admin.php
The AGE-GATE plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.0 via the 'width (and height)' parameter parameter. This is due to missing authentication, capability checks, and nonce verification on the standa…
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Critical 9.8
Snazzy Social Media Feed <= 2.5 - Unauthenticated Arbitrary File Upload via 'pluginURL' Parameter
The Snazzy Social Media Feed plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.5 via the (file scope) function. This is due to missing WordPress bootstrap, authentication, capability, and nonce checks in the s…
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Critical 9.8
Printcart Store - Web to Print Product Designer for WooCommerce (PCDesigner) <= 2.9.1 - Unauthenticated Arbitrary File Upload to Remote Code Execution via nbdesigner_copy_image_from_url
The Printcart Store (PCDesigner / NB Designer) plugin for WooCommerce is vulnerable to unauthenticated arbitrary file upload leading to remote code execution in all versions up to, and including, 2.9.1 The nbdesigner_copy_image_from_url AJAX action is registe…
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Critical 10.0
ColdFusion | Unrestricted Upload of File with Dangerous Type (CWE-434)
ColdFusion is affected by an Unrestricted Upload of File with Dangerous Type vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to execute arbitrary code. Exploitation o…