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
3,436 results · Feed
-
Medium 4.7
itsourcecode Free Hotel Reservation System index.php unrestricted upload
A vulnerability was determined in itsourcecode Free Hotel Reservation System 1.0. The affected element is an unknown function of the file /admin/mod_amenities/index.php?view=add. This manipulation of the argument image causes unrestricted upload. The attack i…
-
Critical 9.8
Unsafe Client MIME Type Handling Can Enable Arbitrary File Upload in plank/laravel-mediable
plank/laravel-mediable through version 6.4.0 can allow upload of a dangerous file type when an application using the package accepts or prefers a client-supplied MIME type during file upload handling. In that configuration, a remote attacker can submit a file…
-
Medium 5.6
kalcaddle kodbox Public Share userShare.class.php add privilege escalation
A vulnerability was identified in kalcaddle kodbox 1.64. This issue affects the function Add of the file app/controller/explorer/userShare.class.php of the component Public Share Handler. Such manipulation leads to unrestricted upload. The attack can be execu…
-
Medium 5.3
OOM from malicious IFD offset in golang.org/x/image/tiff
A maliciously crafted TIFF file can cause image decoding to attempt to allocate up 4GiB of memory, causing either excessive resource consumption or an out-of-memory error.
-
Medium 5.5
Kiteworks Secure Data Forms is vulnerable to an Unrestricted Upload of File with Dangerous Type
Kiteworks is a private data network (PDN). In Kiteworks Secure Data Forms prior to version 9.2.1, the manager of a form could potentially exploit an Unrestricted Upload of File with Dangerous Type due to a missing validation. Upgrade Kiteworks to version 9.2.…
-
Critical 9.9
WordPress Green Downloads plugin <= 2.08 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in halfdata Green Downloads halfdata-paypal-green-downloads allows Using Malicious Files.This issue affects Green Downloads: from n/a through <= 2.08.
-
Critical 9.1
WordPress Photo Engine plugin <= 6.4.9 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in Jordy Meow Photo Engine wplr-sync allows Upload a Web Shell to a Web Server.This issue affects Photo Engine: from n/a through <= 6.4.9.
-
Critical 9.9
WordPress WPJAM Basic plugin <= 6.9.2 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in denishua WPJAM Basic wpjam-basic allows Using Malicious Files.This issue affects WPJAM Basic: from n/a through <= 6.9.2.
-
Critical 9.9
WordPress Ona theme < 1.24 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in deothemes Ona ona allows Upload a Web Shell to a Web Server.This issue affects Ona: from n/a through < 1.24.
-
Critical 9.9
WordPress WPBookit Pro plugin <= 1.6.18 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in iqonicdesign WPBookit Pro wpbookit-pro allows Using Malicious Files.This issue affects WPBookit Pro: from n/a through <= 1.6.18.
-
High 8.8
PhreeBooks ERP 5.2.3 Remote Code Execution via Image Manager
PhreeBooks ERP 5.2.3 contains a remote code execution vulnerability in the image manager that allows authenticated attackers to upload and execute arbitrary PHP files by bypassing file extension controls. Attackers can upload malicious PHP files through the i…
-
High 8.8
PhreeBooks ERP 5.2.3 Arbitrary File Upload via Image Manager
PhreeBooks ERP 5.2.3 contains an arbitrary file upload vulnerability in the Image Manager component that allows authenticated attackers to upload malicious files by submitting requests to the image upload endpoint. Attackers can upload PHP files through the i…
-
High 8.4
FlexHEX 2.71 Local Buffer Overflow via SEH Unicode
FlexHEX 2.71 contains a local buffer overflow vulnerability in the Stream Name field that allows local attackers to execute arbitrary code by triggering a structured exception handler (SEH) overflow. Attackers can craft a malicious text file with carefully al…
-
High 8.4
River Past Cam Do 3.7.6 Local Buffer Overflow in Activation Code
River Past Cam Do 3.7.6 contains a local buffer overflow vulnerability in the activation code input field that allows local attackers to execute arbitrary code by supplying a malicious activation code string. Attackers can craft a buffer containing 608 bytes …
-
High 8.8
JupiterX Core <= 4.14.1 - Authenticated (Subscriber+) Missing Authorization To Limited File Upload via Popup Template Import
The Jupiter X Core plugin for WordPress is vulnerable to limited file uploads due to missing authorization on import_popup_templates() function as well as insufficient file type validation in the upload_files() function in all versions up to, and including, 4…
-
High 8.2
Connect CMS has Stored Cross-site Scripting (XSS) in the File Field of its Form Plugin
Connect-CMS is a content management system. In versions on the 1.x series up to and including 1.41.0 and versions on the 2.x series up to and including 2.41.0, a Stored Cross-site Scripting (XSS) issue exists in the file field of the Form Plugin. Versions 1.4…
-
High 8.8
Census CSWeb arbitrary file upload
Census CSWeb 8.0.1 allows arbitrary file upload. A remote, authenticated attacker could upload a malicious file, possibly leading to remote code execution. Fixed in 8.1.0 alpha.
-
High 8.8
AVideo Vulnerable to Remote Code Execution via Persistent PHP Temp File in Encoder downloadURL with Resolution Validation Abort
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `downloadVideoFromDownloadURL()` function in `objects/aVideoEncoder.json.php` saves remote content to a web-accessible temporary directory using the original URL's filenam…
-
High 8.8
AVideo Vulnerable to Remote Code Execution via MIME/Extension Mismatch in ImageGallery File Upload
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `ImageGallery::saveFile()` method validates uploaded file content using `finfo` MIME type detection but derives the saved filename extension from the user-supplied origina…
-
Medium 6.3
CodePhiliaX Chat2DB JDBC Driver Upload JdbcDriverController.java upload unrestricted upload
A vulnerability was found in CodePhiliaX Chat2DB up to 0.3.7. This affects the function Upload of the file chat2db-server/chat2db-server-web/chat2db-server-web-api/src/main/java/ai/chat2db/server/web/api/controller/driver/JdbcDriverController.java of the comp…
-
Medium 5.3
ThemeREX Addons < 2.38.5 - Unauthenticated Arbitrary File Upload
The trx_addons WordPress plugin before 2.38.5 does not correctly validate file types in one of its AJAX action, allowing unauthenticated users to upload arbitrary file. This is due to an incorrect fix of CVE-2024-13448
-
Medium 6.2
AnMing MP3 CD Burner 2.0 Local Denial of Service
AnMing MP3 CD Burner 2.0 contains a buffer overflow vulnerability that allows local attackers to crash the application by supplying an oversized string. Attackers can paste a 6000-byte payload into the registration name field to trigger a denial of service co…
-
High 7.3
Acrel Environmental Monitoring Cloud Platform unrestricted upload
A vulnerability was found in Acrel Environmental Monitoring Cloud Platform 1.1.0. This issue affects some unknown processing. Performing a manipulation results in unrestricted upload. The attack may be initiated remotely. The exploit has been made public and …
-
Medium 6.5
i-doit CMDB 1.12 Arbitrary File Download via file_manager Parameter
i-doit CMDB 1.12 contains an arbitrary file download vulnerability that allows authenticated attackers to download sensitive files by manipulating the file parameter in index.php. Attackers can send GET requests to index.php with file_manager=image and supply…
-
High 8.2
ownDMS 4.7 SQL Injection via pdfstream.php imagestream.php
ownDMS 4.7 contains an SQL injection vulnerability that allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the IMG parameter. Attackers can send GET requests to pdfstream.php, imagestream.php, or anyfilestrea…
-
Low 2.1
Nhost Storage Affected by MIME Type Spoofing via Trusted Client Content-Type Header in Storage Upload
Nhost is an open source Firebase alternative with GraphQL. Prior to version 0.12.0, the storage service's file upload handler trusts the client-provided Content-Type header without performing server-side MIME type detection. This allows an attacker to upload …
-
Medium 6.3
eosphoros-ai DB-GPT FastAPI Endpoint controller.py module_plugin.refresh_plugins unrestricted upload
A vulnerability has been found in eosphoros-ai DB-GPT up to 0.7.5. This issue affects the function module_plugin.refresh_plugins of the file packages/dbgpt-serve/src/dbgpt_serve/agent/hub/controller.py of the component FastAPI Endpoint. Such manipulation lead…
-
High 8.8
Precurio Intranet Portal 4.4: Cross-Site Request Forgery leading to arbitrary file upload
Precurio Intranet Portal 4.4 contains a cross-site request forgery vulnerability that allows attackers to induce authenticated users to submit crafted requests to a profile update endpoint handling file uploads. Attackers can exploit this to upload executable…
-
Medium 4.3
FileRise: WebDAV upload path bypasses filename validation enforced by regular uploads
FileRise is a self-hosted web file manager / WebDAV server. In versions prior to 3.8.0, the WebDAV upload endpoint accepts any file extension including .phtml, .php5, .htaccess, and other server-side executable types, bypassing the filename validation enforce…
-
Critical 9.8CVE-2026-32985 Public exploit
Xerte Online Toolkits <= 3.14 Unauthenticated Template Import Arbitrary File Upload Leading to Remote Code Execution
Xerte Online Toolkits versions 3.14 and earlier contain an unauthenticated arbitrary file upload vulnerability in the template import functionality that allows remote attackers to execute arbitrary code by uploading a crafted ZIP archive containing malicious …
-
High 8.8
The Terrapack software, from ASTER TEC / ASTER S.p.A., with the indicated components and versions has a file upload vul…
-
High 8.8
Admidio: Unrestricted File Upload via CSRF Token Validation Bypass in Documents & Files Module
Admidio is an open-source user management solution. Versions 5.0.6 and below contain a critical unrestricted file upload vulnerability in the Documents & Files module. Due to a design flaw in how CSRF token validation and file extension verification interact …
-
Low 2.7
SuiteCRM Vulnerable to Authenticated Arbitrary File Upload via Configurator addfontresult View in SuiteCRM
SuiteCRM is an open-source, enterprise-ready Customer Relationship Management (CRM) software application. Prior to versions 7.15.1 and 8.9.3, SuiteCRM contains an authenticated arbitrary file upload vulnerability in the Configurator module. An authenticated a…
-
High 7.2
WordPress Photography theme < 7.7.6 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in ThemeGoods Photography allows Path Traversal.This issue affects Photography: from n/a before 7.7.6.
-
Critical 9.1
WordPress Mobile App Editor plugin <= 1.3.1 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in Syarif Mobile App Editor mobile-app-editor allows Upload a Web Shell to a Web Server.This issue affects Mobile App Editor: from n/a through <= 1.3.1.
-
Critical 9.0CVE-2026-27540 Public exploit
WordPress Woocommerce Wholesale Lead Capture plugin <= 2.0.3.1 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in Rymera Web Co Pty Ltd. Woocommerce Wholesale Lead Capture allows Using Malicious Files. This issue affects Woocommerce Wholesale Lead Capture: through 2.0.3.1.
-
High 7.2
xiaoheiFS Vulnerable to RCE via Arbitrary Payment Plugin Upload (Automatic Execution)
xiaoheiFS is a self-hosted financial and operational system for cloud service businesses. In versions up to and including 0.3.15, the `AdminPaymentPluginUpload` endpoint lets admins upload any file to `plugins/payment/`. It only checks a hardcoded password (`…
-
High 7.2
xiaoheiFS Vulnerable to RCE via Unrestricted Plugin Installation (Manifest Manipulation)
xiaoheiFS is a self-hosted financial and operational system for cloud service businesses. In versions up to and including 0.3.15, the standard plugin system allows admins to upload a ZIP file containing a binary and a `manifest.json`. The server trusts the `b…
-
Critical 9.8
An arbitrary file upload vulnerability in aaPanel v7.57.0 allows attackers to execute arbitrary code via uploading a cr…
-
High 7.3
Tiandy Easy7 Integrated Management Platform Endpoint uploadLedImage unrestricted upload
A vulnerability was found in Tiandy Easy7 Integrated Management Platform 7.17.0. This affects an unknown part of the file /rest/file/uploadLedImage of the component Endpoint. The manipulation of the argument File results in unrestricted upload. The attack may…