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
3,436 results · Feed
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Critical 9.8CVE-2025-13374 Public exploit
Kalrav AI Agent <= 2.3.3 - Unauthenticated Arbitrary File Upload via kalrav_upload_file AJAX Action
The Kalrav AI Agent plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the kalrav_upload_file AJAX action in all versions up to, and including, 2.3.3. This makes it possible for unauthenticated attackers to upl…
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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.
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Medium 4.0
YetiShare File Hosting Script 5.1.0 Remote File Upload SSRF Vulnerability
YetiShare File Hosting Script 5.1.0 contains a server-side request forgery vulnerability that allows attackers to read local system files through the remote file upload feature. Attackers can exploit the url parameter in the url_upload_handler endpoint to acc…
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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…
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Critical 9.8
A Remote Code Execution (RCE) vulnerability exists in Sourcecodester Modern Image Gallery App v1.0 within the gallery/u…
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Critical 9.1
WordPress Xpro Elementor Addons plugin <= 1.4.19.1 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in Xpro Xpro Elementor Addons xpro-elementor-addons allows Upload a Web Shell to a Web Server.This issue affects Xpro Elementor Addons: from n/a through <= 1.4.19.1.
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Critical 9.9
WordPress Miion theme <= 1.2.7 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in zozothemes Miion miion allows Upload a Web Shell to a Web Server.This issue affects Miion: from n/a through <= 1.2.7.
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Critical 9.9
WordPress Blogzee theme <= 1.0.5 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in blazethemes Blogzee blogzee allows Using Malicious Files.This issue affects Blogzee: from n/a through <= 1.0.5.
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Critical 9.9
WordPress Blogistic theme <= 1.0.5 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in blazethemes Blogistic blogistic allows Using Malicious Files.This issue affects Blogistic: from n/a through <= 1.0.5.
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Critical 10.0CVE-2025-68001 Public exploit
WordPress g-FFL Checkout plugin <= 2.1.0 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in garidium g-FFL Checkout g-ffl-checkout allows Upload a Web Shell to a Web Server.This issue affects g-FFL Checkout: from n/a through <= 2.1.0.
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Critical 9.9
WordPress Real Homes CRM plugin <= 1.0.0 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in InspiryThemes Real Homes CRM realhomes-crm allows Using Malicious Files.This issue affects Real Homes CRM: from n/a through <= 1.0.0.
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Critical 9.9
WordPress Blogmatic theme <= 1.0.3 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in blazethemes Blogmatic blogmatic.This issue affects Blogmatic: from n/a through <= 1.0.3.
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Critical 9.9
WordPress News Event theme <= 1.0.1 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in blazethemes News Event news-event.This issue affects News Event: from n/a through <= 1.0.1.
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Critical 10.0
WordPress Energia theme <= 1.1.2 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in Farost Energia energia allows Upload a Web Shell to a Web Server.This issue affects Energia: from n/a through <= 1.1.2.
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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.
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Critical 9.8
AMASTAR Technology｜MeetingHub - Arbitrary File Upload
MeetingHub developed by HAMASTAR Technology has an 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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Medium 5.4
Horilla has File Upload XSS
Horilla is a free and open source Human Resource Management System (HRMS). In versions prior to 1.5.0, a cross-site scripting vulnerability can be triggered because the extension and content-type are not checked during the profile photo update step. Version 1…
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Critical 10.0
File Upload vulnerability in TMS Global Software TMS Management Console v.6.3.7.27386.20250818 allows a remote attacker…
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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…
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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.
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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.
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Low 3.1
HCL AION is affected by an Unrestricted File Upload vulnerability
HCL AION is affected by an Unrestricted File Upload vulnerability. This can allow malicious file uploads, potentially resulting in unauthorized code execution or system compromise.
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Medium 4.7
technical-laohu mpay QR Code Image unrestricted upload
A security vulnerability has been detected in technical-laohu mpay up to 1.2.4. The impacted element is an unknown function of the component QR Code Image Handler. Such manipulation of the argument codeimg leads to unrestricted upload. The attack may be launc…
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Medium 6.3
lwj flow SVG File FormResource.java uploadFile unrestricted upload
A security vulnerability has been detected in lwj flow up to a3d2fe8133db9d3b50fda4f66f68634640344641. This affects the function uploadFile of the file \flow-master\flow-front-rest\src\main\java\com\dragon\flow\web\resource\flow\FormResource.java of the compo…
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Medium 6.3
EyouCMS Member Avatar Diyajax.php check_userinfo unrestricted upload
A weakness has been identified in EyouCMS up to 1.7.1/5.0. Impacted is the function check_userinfo of the file Diyajax.php of the component Member Avatar Handler. Executing a manipulation of the argument viewfile can lead to unrestricted upload. The attack ma…
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Medium 6.3
xiweicheng TMS FileController.java upload unrestricted upload
A vulnerability was detected in xiweicheng TMS up to 2.28.0. Affected by this issue is the function Upload of the file src/main/java/com/lhjz/portal/controller/FileController.java. The manipulation of the argument filename results in unrestricted upload. The …
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Medium 4.4
Filr – Secure document library <= 1.2.11 - Authenticated (Administrator+) Stored Cross-Site Scripting via HTML Upload
The Filr – Secure document library plugin for WordPress is vulnerable to Stored Cross-Site Scripting via unrestricted file upload in all versions up to, and including, 1.2.11 due to insufficient file type restrictions in the FILR_Uploader class. This makes it…
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Critical 9.3
Omni Secure Files < 0.1.14 Unauthenticated Arbitrary File Upload
Omni Secure Files plugin versions prior to 0.1.14 contain an arbitrary file upload vulnerability in the bundled plupload example endpoint. The /wp-content/plugins/omni-secure-files/plupload/examples/upload.php handler allows unauthenticated uploads without en…
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Medium 4.8
Extension - stackideas.com - Lack of mime type validation in EasyDiscuss component 1.0.0-5.0.15 for Joomla
User provided uploads to the Easy Discuss component for Joomla aren't properly validated. Uploads are purely checked by file extensions, no mime type checks are happening.
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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…
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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 …
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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…
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Medium 5.4
Phpwcms 1.9.30 - Arbitrary File Upload
Phpwcms 1.9.30 contains a file upload vulnerability that allows authenticated attackers to upload malicious SVG files with embedded JavaScript. Attackers can upload crafted SVG payloads through the multiple file upload feature to potentially execute cross-sit…
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Critical 9.3
Uploadify <= 1.0 Unauthenticated Arbitrary File Upload
Uploadify WordPress plugin versions up to and including 1.0 contain an arbitrary file upload vulnerability in process_upload.php due to missing file type validation. An unauthenticated remote attacker can upload arbitrary files to the affected WordPress site,…
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Critical 9.8
ProjeQtOr Project Management 9.1.4 - Remote Code Execution
ProjeQtOr Project Management 9.1.4 contains a file upload vulnerability that allows guest users to upload malicious PHP files with arbitrary code execution capabilities. Attackers can upload a PHP script through the profile attachment section and execute syst…
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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 …
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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…
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Critical 9.8
phpKF CMS 3.00 Beta y6 - Remote Code Execution (RCE) (Unauthenticated)
phpKF CMS 3.00 Beta y6 contains an unauthenticated file upload vulnerability that allows remote attackers to execute arbitrary code by bypassing file extension checks. Attackers can upload a PHP file disguised as a PNG, rename it, and execute system commands …
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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…
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High 8.8
File upload vulnerability in Omnispace Agora Project before 25.10 allowing authenticated, or under certain conditions a…