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
Smart Framework <= Multiple Plugins - Authenticated (Subscriber+) Arbitrary File Upload
Multiple plugins and/or themes for WordPress are vulnerable to Arbitrary File Uploads due to a missing capability check on the ajaxUploadFonts() function in various versions. This makes it possible for authenticated attackers, with Subscriber-level access and…
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High 8.8
Aeropage Sync for Airtable <= 3.2.0 - Authenticated (Subscriber+) Arbitrary File Upload
The Aeropage Sync for Airtable plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'aeropage_media_downloader' function in all versions up to, and including, 3.2.0. This makes it possible for authenticated a…
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High 8.8CVE-2025-3616 Public exploit
Greenshift 11.4 - 11.4.5 - Authenticated (Subscriber+) Arbitrary File Upload
The Greenshift – animation and page builder blocks plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the gspb_make_proxy_api_request() function in versions 11.4 to 11.4.5. This makes it possible for authentica…
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High 7.8
youtube-dl vulnerable to file system modification and RCE through improper file-extension sanitization
#### Description This advisory follows the security advisory [GHSA-79w7-vh3h-8g4j published by the _yt-dlp/yt-dlp_ project](https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-79w7-vh3h-8g4j) to aid remediation of the issue in the _ytdl-org/youtube-dl_ …
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High 7.3
veal98 小牛肉 Echo 开源社区系统 uploadMdPic unrestricted upload
A vulnerability, which was classified as critical, has been found in veal98 小牛肉 Echo 开源社区系统 4.2. This issue affects the function uploadMdPic of the file /discuss/uploadMdPic. The manipulation of the argument editormd-image-file leads to unrestricted upload. T…
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High 8.8CVE-2025-29017 Public exploit
A Remote Code Execution (RCE) vulnerability exists in Code Astro Internet Banking System 2.0.0 due to improper file upl…
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High 8.1
An insecure permissions vulnerability in verydows v2.0 allows a remote attacker to execute arbitrary code by uploading …
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High 7.2
Authenticated Remote Code Execution Vulnerabilities in AOS-10 GW and AOS-8 Controller/Mobility Conductor Web-Based Management Interface via Arbitrary File Write
Arbitrary File Write vulnerabilities exist 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 attacker to upload arbitrary files and execu…
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High 8.8
Streamit <= 4.0.1 - Authenticated (Subscriber+) Arbitrary File Upload
The Streamit theme for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'st_Authentication_Controller::edit_profile' function in all versions up to, and including, 4.0.1. This makes it possible for authenticated att…
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High 8.8
Woffice Core <= 5.4.21 - Authenticated (Subscriber+) Arbitrary File Upload
The Woffice Core plugin for WordPress, used by the Woffice Theme, is vulnerable to arbitrary file uploads due to missing file type validation in the 'saveFeaturedImage' function in all versions up to, and including, 5.4.21. This makes it possible for authenti…
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High 7.2
Booster for WooCommerce 4.0.1 - 7.2.4 - Unauthenticated Stored Cross-Site Scripting
The Booster for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in versions 4.0.1 to 7.2.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to i…
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High 8.1
Booster for WooCommerce 4.0.1 - 7.2.4 - Unauthenticated Arbitrary File Upload
The Booster for WooCommerce plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the validate_product_input_fields_on_add_to_cart function in versions 4.0.1 to 7.2.4. This makes it possible for unauthenticated at…
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High 8.8
WP Pro Real Estate 7 <= 3.5.4 - Authenticated (Custom) Arbitrary File Upload
The Real Estate 7 WordPress theme for WordPress is vulnerable to arbitrary file uploads due to missing file type validation via the 'template-submit-listing.php' file in all versions up to, and including, 3.5.4. This makes it possible for authenticated attack…
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High 8.8
Import Export Suite for CSV and XML Datafeed <= 7.19 - Authenticated (Subscriber+) Arbitrary File Upload
The Import Export Suite for CSV and XML Datafeed plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the import_single_post_as_csv() function in all versions up to, and including, 7.19. This makes it possible fo…
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High 8.8CVE-2025-2249 Public exploit
SoJ Soundslides <= 1.2.2 - Authenticated (Contributor+) Arbitrary File Upload
The SoJ SoundSlides plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the soj_soundslides_options_subpanel() function in all versions up to, and including, 1.2.2. This makes it possible for authenticated attac…
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High 8.8
Inline Image Upload for BBPress <= 1.1.19 - Authenticated (Subscriber+) Arbitrary File Upload
The Inline Image Upload for BBPress plugin for WordPress is vulnerable to arbitrary file uploads due to missing file extension validation in the file uploading functionality in all versions up to, and including, 1.1.19. This makes it possible for authenticate…
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High 7.2CVE-2025-2749 Exploited
Kentico Xperience <= 13.0.178 Staging Media File Upload Authenticated RCE
An authenticated remote code execution in Kentico Xperience allows authenticated users Staging Sync Server to upload arbitrary data to path relative locations. This results in path traversal and arbitrary file upload, including content that can be executed se…
KEV Apr 20, 2026 -
High 7.3
Digiwin ERP FileUploadApi.ashx DoWebUpload unrestricted upload
A vulnerability classified as critical has been found in Digiwin ERP 5.1. Affected is the function DoUpload/DoWebUpload of the file /Api/FileUploadApi.ashx. The manipulation of the argument File leads to unrestricted upload. It is possible to launch the attac…
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High 7.2
Unrestricted File Write and Read in composiohq/composio
In composiohq/composio version 0.4.3, there is an unrestricted file write and read vulnerability in the filetools actions. Due to improper validation of file paths, an attacker can read and write files anywhere on the server, potentially leading to privilege …
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High 8.6
GLPI allows authenticated remote code execution
GLPI is a free asset and IT management software package. An authenticated user can upload and force the execution of *.php files located on the GLPI server. This vulnerability is fixed in 10.0.18.
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High 8.7
Unrestricted file upload vulnerability in Softdial Contact Center
Unrestricted file upload to Softdial Contact Center of Sytel Ltd. This vulnerability could allow an attacker to upload files to the server via the ‘/softdial/phpconsole/upload.php’ endpoint, which is protected by basic HTTP authentication. The files are uploa…
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High 8.8
A logic issue was addressed with improved file handling. This issue is fixed in iOS 18.2 and iPadOS 18.2, macOS Sequoia…
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High 8.8
e-Excellence U-Office Force - Arbitrary File Upload
The U-Office Force from e-Excellence has an Arbitrary File Upload vulnerability, allowing remote attackers with regular privileges to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.
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High 7.3
LoveCards LoveCardsV2 image unrestricted upload
A vulnerability was found in LoveCards LoveCardsV2 up to 2.3.2 and classified as critical. This issue affects some unknown processing of the file /api/upload/image. The manipulation of the argument file leads to unrestricted upload. The attack may be initiate…
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High 7.1
[20250301] - Core - Malicious file uploads via Media Manager
Inadequate checks in the Media Manager allowed users with "edit" privileges to change file extension to arbitrary extension, including .php and other potentially executable extensions.
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High 8.1
Product Input Fields for WooCommerce <= 1.12.0 - Unauthenticated Limited File Upload
The Product Input Fields for WooCommerce plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the add_product_input_fields_to_order_item_meta() function in all versions up to, and including, 1.12.0. This may…
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High 8.8
Aiomatic - AI Content Writer, Editor, ChatBot & AI Toolkit <= 2.3.8 - Missing Authorization to Authenticated (Contributor+) Arbitrary File Upload
The Aiomatic - Automatic AI Content Writer & Editor, GPT-3 & GPT-4, ChatGPT ChatBot & AI Toolkit plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'aiomatic_generate_featured_image' function in all version…
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High 7.2
SMTP by BestWebSoft <= 1.1.9 - Authenticated (Administrator+) Arbitrary File Upload
The SMTP by BestWebSoft plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'save_options' function in all versions up to, and including, 1.1.9. This makes it possible for authenticated attackers, with Admin…
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High 8.8
Vasion Print (formerly PrinterLogic) before Virtual Appliance Host 1.0.735 Application 20.0.1330 allows Driver Unrestri…
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High 8.8
An issue in the CGI endpoint used to upload configurations in Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor 262…
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High 8.4
An issue in Draytek devices Vigor 165/166 prior to v4.2.6 , Vigor 2620/LTE200 prior to v3.9.8.8, Vigor 2860/2925 prior …
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High 7.3
Lumsoft ERP ASPX File UploadAjaxAPI.ashx unrestricted upload
A vulnerability, which was classified as critical, has been found in Lumsoft ERP 8. Affected by this issue is some unknown functionality of the file /Api/TinyMce/UploadAjaxAPI.ashx of the component ASPX File Handler. The manipulation of the argument file lead…
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High 7.2CVE-2024-13869 Public exploit
Migration, Backup, Staging – WPvivid <= 0.9.112 - Authenticated (Admin+) Arbitrary File Upload via wpvivid_upload_file
The Migration, Backup, Staging – WPvivid Backup & Migration plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'upload_files' function in all versions up to, and including, 0.9.112. This makes it possible f…
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High 7.3
hzmanyun Education and Training System saveImage unrestricted upload
A vulnerability classified as critical was found in hzmanyun Education and Training System 3.1.1. This vulnerability affects the function saveImage. The manipulation of the argument file leads to unrestricted upload. The attack can be initiated remotely. The …
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High 8.8
Learning Digital Orca HCM - Arbitrary File Upload
Orca HCM from LEARNING DIGITAL has an Arbitrary File Upload vulnerability, allowing remote attackers with regular privileges to upload and run web shells
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High 7.3
needyamin Library Card System Add Picture signup.php unrestricted upload
A vulnerability was found in needyamin Library Card System 1.0. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file /signup.php of the component Add Picture. The manipulation leads to unrestricted upload. T…
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High 8.1
CWE-434: Unrestricted Upload of File with Dangerous Type vulnerability exists that could render the device inoperable w…
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High 8.8
All-Images.ai – IA Image Bank and Custom Image creation <= 1.0.4 - Authenticated (Subscriber+) Arbitrary File Upload
The All-Images.ai – IA Image Bank and Custom Image creation plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the '_get_image_by_url' function in all versions up to, and including, 1.0.4. This makes it possibl…
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High 8.8
Authenticated Arbitrary Python File Upload via Plugin Manager
An authenticated attacker is able to use the Plugin Manager of the web interface of the Wattsense Bridge devices to upload malicious Python files to the device. This enables an attacker to gain remote root access to the device. An attacker needs a valid user …
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High 7.3
Lumsoft ERP FileUploadApi.ashx DoWebUpload unrestricted upload
A vulnerability, which was classified as critical, was found in Lumsoft ERP 8. Affected is the function DoUpload/DoWebUpload of the file /Api/FileUploadApi.ashx. The manipulation of the argument file leads to unrestricted upload. It is possible to launch the …