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
936 results · Clear filters · Feed
-
Medium 6.3
SourceCodester Hotel and Lodge Management System Profile profile.php unrestricted upload
A weakness has been identified in SourceCodester Hotel and Lodge Management System 1.0. The impacted element is an unknown function of the file /profile.php of the component Profile Page. Executing manipulation of the argument image can lead to unrestricted u…
-
Medium 6.3
code-projects Online Hotel Reservation System addslideexec.php unrestricted upload
A flaw has been found in code-projects Online Hotel Reservation System 1.0. Affected is an unknown function of the file /admin/addslideexec.php. Executing manipulation of the argument image can lead to unrestricted upload. The attack may be performed from rem…
-
Medium 6.3
code-projects Online Hotel Reservation System addgalleryexec.php unrestricted upload
A vulnerability was detected in code-projects Online Hotel Reservation System 1.0. This impacts an unknown function of the file /admin/addgalleryexec.php. Performing manipulation of the argument image results in unrestricted upload. The attack is possible to …
-
Medium 6.3
code-projects Online Hotel Reservation System addexec.php unrestricted upload
A security vulnerability has been detected in code-projects Online Hotel Reservation System 1.0. This affects an unknown function of the file /admin/addexec.php. Such manipulation of the argument image leads to unrestricted upload. The attack can be executed …
-
Medium 6.3
code-projects Online Hotel Reservation System editpicexec.php unrestricted upload
A weakness has been identified in code-projects Online Hotel Reservation System 1.0. The impacted element is an unknown function of the file /admin/editpicexec.php. This manipulation of the argument image causes unrestricted upload. Remote exploitation of the…
-
Medium 5.1
Kuno CMS Vulnerable to Server-Side Request Forgery (SSRF) via Unsafe SVG Upload
KUNO CMS is a fully deployable full-stack blog application. In versions prior to 1.3.15, an SSRF (Server-Side Request Forgery) vulnerability exists in the Media module of the Kuno CMS administrative panel. A logged-in administrator can upload a specially craf…
-
Medium 6.3
zhuimengshaonian wisdom-education UploadController.java uploadFile unrestricted upload
A security vulnerability has been detected in zhuimengshaonian wisdom-education up to 1.0.4. Impacted is the function uploadFile of the file src/main/java/com/education/core/controller/UploadController.java. Such manipulation of the argument File leads to unr…
-
Medium 5.4
Kuno is Vulnerable to Stored XSS Attack via SVG File Upload
KUNO CMS is a fully deployable full-stack blog application. Versions 1.3.13 and below contain validation flaws in its file upload functionality that can be exploited for stored XSS. The upload endpoint only validates file types based on Content-Type headers, …
-
Medium 6.4
Qyrr – simply and modern QR-Code creation <= 2.0.7 - Authenticated (Contributor+) Arbitrary File Upload
The Qyrr – simply and modern QR-Code creation plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the blob_to_file() function in all versions up to, and including, 2.0.7. This makes it possible for authenticated…
-
Medium 4.7
YiFang CMS Backend File.php webUploader unrestricted upload
A flaw has been found in YiFang CMS up to 2.0.2. The impacted element is the function webUploader of the file app/app/controller/File.php of the component Backend. Executing manipulation of the argument uploadpath can lead to unrestricted upload. The attack c…
-
Medium 4.7
Projectworlds Online Tours and Travels change-image.php unrestricted upload
A security vulnerability has been detected in Projectworlds Online Tours and Travels 1.0. Affected by this vulnerability is an unknown functionality of the file /admin/change-image.php. The manipulation of the argument packageimage leads to unrestricted uploa…
-
Medium 6.3
itsourcecode Open Source Job Portal controller.php unrestricted upload
A vulnerability was identified in itsourcecode Open Source Job Portal 1.0. Affected by this vulnerability is an unknown functionality of the file /admin/user/controller.php?action=photos. The manipulation of the argument photo leads to unrestricted upload. Th…
-
Medium 6.7
Authenticated Arbitrary File Upload in Multiple WSO2 Products via BPEL Uploader SOAP Service Leading to Remote Code Execution
An arbitrary file upload vulnerability exists in multiple WSO2 products due to improper validation of user-supplied filenames in the BPEL uploader SOAP service endpoint. A malicious actor with administrative privileges can upload arbitrary files to a user-con…
-
Medium 6.3
academico-sis academico Profile Picture edit-photo unrestricted upload
A vulnerability was determined in academico-sis academico up to d9a9e2636fbf7e5845ee086bcb03ca62faceb6ab. Affected by this issue is some unknown functionality of the file /edit-photo of the component Profile Picture Handler. This manipulation causes unrestric…
-
Medium 6.3
Selleo Mentingo Content-Type unrestricted upload
A vulnerability was detected in Selleo Mentingo 2025.08.27. The impacted element is an unknown function of the component Content-Type Handler. The manipulation of the argument userAvatar results in unrestricted upload. The attack may be performed from remote.…
-
Medium 6.3
Selleo Mentingo Profile Picture unrestricted upload
A security vulnerability has been detected in Selleo Mentingo up to 2025.08.27. The affected element is an unknown function of the component Profile Picture Handler. The manipulation of the argument userAvatar leads to unrestricted upload. The attack is possi…
-
Medium 6.3
Airsonic-Advanced Playlist Upload unrestricted upload
A vulnerability was detected in Airsonic-Advanced up to 10.6.0. This vulnerability affects unknown code of the component Playlist Upload Handler. Performing manipulation results in unrestricted upload. It is possible to initiate the attack remotely. The explo…
-
Medium 5.3
Unrestricted upload vulnerability for dangerous file types on Summar Software´s Portal del Empleado
Unrestricted upload vulnerability for dangerous file types on Summar Software´s Portal del Empleado. This vulnerability allows an attacker to upload a dangerous file type by sending a POST request using the parameter “cctl00$ContentPlaceHolder1$fuAdjunto” in …
-
Medium 6.3
itsourcecode E-Commerce Website users.php unrestricted upload
A security flaw has been discovered in itsourcecode E-Commerce Website 1.0. Affected is an unknown function of the file /admin/users.php. The manipulation results in unrestricted upload. The attack can be launched remotely. The exploit has been released to th…
-
Medium 6.3
itsourcecode E-Commerce Website products.php unrestricted upload
A vulnerability was identified in itsourcecode E-Commerce Website 1.0. This impacts an unknown function of the file /admin/products.php. The manipulation leads to unrestricted upload. The attack can be initiated remotely. The exploit is publicly available and…
-
Medium 6.3
SourceCodester Online Student File Management System save_file.php unrestricted upload
A weakness has been identified in SourceCodester Online Student File Management System 1.0. This affects an unknown function of the file /save_file.php. Executing manipulation can lead to unrestricted upload. The attack may be launched remotely. The exploit h…
-
Medium 6.3
SourceCodester Pet Grooming Management Software Setting seo_setting.php unrestricted upload
A security vulnerability has been detected in SourceCodester Pet Grooming Management Software 1.0. Affected is an unknown function of the file /admin/seo_setting.php of the component Setting Handler. The manipulation of the argument website_image leads to unr…
-
Medium 6.3
SourceCodester Pet Grooming Management Software user.php unrestricted upload
A weakness has been identified in SourceCodester Pet Grooming Management Software 1.0. This impacts an unknown function of the file /admin/operation/user.php. Executing manipulation of the argument website_image can lead to unrestricted upload. It is possible…
-
Medium 6.5CVE-2025-57176 Public exploit
On Ceragon Networks / Siklu Communication EtherHaul and MultiHaul Series microwave antennas before 2026-03-10, the rfpi…
-
Medium 6.3
fcba_zzm ics-park Smart Park Management System FileUploadUtils.java unrestricted upload
A security flaw has been discovered in fcba_zzm ics-park Smart Park Management System 2.0. This vulnerability affects unknown code of the file FileUploadUtils.java. The manipulation of the argument File results in unrestricted upload. The attack can be launch…
-
Medium 6.3
SourceCodester Pet Grooming Management Software manage_website.php unrestricted upload
A security flaw has been discovered in SourceCodester Pet Grooming Management Software 1.0. This vulnerability affects unknown code of the file manage_website.php. The manipulation results in unrestricted upload. It is possible to launch the attack remotely. …
-
Medium 6.3
SourceCodester Pet Grooming Management Software profile.php unrestricted upload
A vulnerability was determined in SourceCodester Pet Grooming Management Software 1.0. Affected by this issue is some unknown functionality of the file /admin/profile.php. Executing manipulation can lead to unrestricted upload. The attack may be performed fro…
-
Medium 4.7
SourceCodester Pet Management System profile.php unrestricted upload
A flaw has been found in SourceCodester Pet Management System 1.0. This impacts an unknown function of the file /admin/profile.php. This manipulation of the argument website_image causes unrestricted upload. Remote exploitation of the attack is possible. The …
-
Medium —
Vaadin Platform possible file bypass via upload validation on the server-side
### Description When the Vaadin Upload's start listener is used to validate metadata about an incoming upload, it is possible to bypass the upload validation. Users of affected versions should apply the upgrade to a more recent Vaadin version.
-
Medium —
Vaadin Flow Components possible file bypass via upload validation on the server-side
### Description When the Vaadin Upload's start listener is used to validate metadata about an incoming upload, it is possible to bypass the upload validation. Users of affected versions should apply the upgrade to a more recent Vaadin version.
-
Medium 5.3
Possibility to bypass file upload validation on the server-side
When the Vaadin Upload's start listener is used to validate metadata about an incoming upload, it is possible to bypass the upload validation. Users of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue inc…
-
Medium 6.3
CodeAstro Real Estate Management System submitproperty.php unrestricted upload
A vulnerability has been found in CodeAstro Real Estate Management System 1.0. Affected is an unknown function of the file /submitproperty.php. The manipulation leads to unrestricted upload. The attack may be initiated remotely. The exploit has been disclosed…
-
Medium 6.3
CodeAstro Real Estate Management System register.php unrestricted upload
A flaw has been found in CodeAstro Real Estate Management System 1.0. This impacts an unknown function of the file /register.php. Executing manipulation of the argument uimage can lead to unrestricted upload. The attack can be launched remotely. The exploit h…
-
Medium 4.3
Cisco Evolved Programmable Network Manager Arbitrary File Upload Vulnerability
A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager (EPNM) could allow an authenticated, remote attacker to upload arbitrary files to an affected device. This vulnerability is due to improper validation of files…
-
Medium 6.3
ScriptAndTools Real Estate Management System register.php unrestricted upload
A weakness has been identified in ScriptAndTools Real Estate Management System 1.0. Impacted is an unknown function of the file register.php. This manipulation of the argument uimage causes unrestricted upload. Remote exploitation of the attack is possible. T…
-
Medium 6.3
code-projects Mobile Shop Management System AddNewProduct.php unrestricted upload
A security vulnerability has been detected in code-projects Mobile Shop Management System 1.0. This affects an unknown function of the file AddNewProduct.php. The manipulation of the argument ProductImage leads to unrestricted upload. The attack is possible t…
-
Medium 5.1
Stored XSS by uploading a specially crafted floor plan file
E3 Site Supervisor Control (firmware version < 2.31F01) has a floor plan feature that allows for an unauthenticated attacker to upload floor plan files. By uploading a specially crafted floor plan file, an attacker can inject a stored XSS to the floorplan web…
-
Medium 6.3
SimStudioAI sim HTML File route.ts import unrestricted upload
A weakness has been identified in SimStudioAI sim up to ed9b9ad83f1a7c61f4392787fb51837d34eeb0af. Affected by this issue is the function Import of the file apps/sim/app/api/files/upload/route.ts of the component HTML File Parser. Executing manipulation of the…
-
Medium 6.3
xujeff tianti 天梯 UploadController.java ajaxUploadFile unrestricted upload
A vulnerability has been found in xujeff tianti 天梯 up to 2.3. The impacted element is the function ajaxUploadFile of the file src/main/java/com/jeff/tianti/controller/UploadController.java. The manipulation of the argument upfile leads to unrestricted upload.…
-
Medium 6.9
SUNNET Corporate Training Management System - Unrestricted Upload of File with Dangerous Type
An unrestricted upload of file with dangerous type vulnerability in SUNNET Corporate Training Management System before 10.11 allows remote attackers to write malicious code in a specific file, which may lead to arbitrary code execution.