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
936 results · Clear filters · Feed
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Medium 6.4
Bit File Manager – 100% Free & Open Source File Manager and Code Editor for WordPress <= 6.7 - Authenticated (Subscriber+) Stored Cross-Site Scripting via SVG File Uploads
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Medium 5.4
Erupt Unrestricted Upload of File with Dangerous Type vulnerability
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Medium 6.8CVE-2024-7074 EPSS 18%
Authenticated Arbitrary File Upload in Multiple WSO2 Products via SOAP Admin Service Leading to Remote Code Execution
An arbitrary file upload vulnerability exists in multiple WSO2 products due to improper validation of user input in SOAP admin services. A malicious actor with administrative privileges can upload an arbitrary file to a user-controlled location on the server.…
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Medium 6.3
chaitak-gorai Blogbook posts.php unrestricted upload
A vulnerability, which was classified as critical, was found in chaitak-gorai Blogbook up to 92f5cf90f8a7e6566b576fe0952e14e1c6736513. Affected is an unknown function of the file /admin/posts.php?source=add_post. The manipulation of the argument image leads t…
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Medium 5.3
Gradio Allows Unauthorized File Copy via Path Manipulation
Gradio is an open-source Python package that allows quick building of demos and web application for machine learning models, API, or any arbitrary Python function. Prior to version 5.31.0, an arbitrary file copy vulnerability in Gradio's flagging feature allo…
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Medium 5.3CVE-2025-46080 Public exploit
HuoCMS V3.5.1 has a File Upload Vulnerability. An attacker can exploit this flaw to bypass whitelist restrictions and c…
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Medium 5.3CVE-2025-46078 Public exploit
HuoCMS V3.5.1 and before is vulnerable to file upload, which allows attackers to take control of the target server
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Medium 6.3
Realce Tecnologia Queue Ticket Kiosk Image File ajax.php unrestricted upload
A vulnerability classified as critical has been found in Realce Tecnologia Queue Ticket Kiosk up to 20250517. Affected is an unknown function of the file /adm/ajax.php of the component Image File Handler. The manipulation of the argument files[] leads to unre…
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Medium 6.3
llisoft MTA Maita Training System OpenController.java this.fileService.download unrestricted upload
A vulnerability, which was classified as critical, has been found in llisoft MTA Maita Training System 4.5. This issue affects the function this.fileService.download of the file com\llisoft\controller\OpenController.java. The manipulation of the argument url …
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Medium 6.3
H3C SecCenter SMP-E1114P02 importFile unrestricted upload
A vulnerability, which was classified as critical, has been found in H3C SecCenter SMP-E1114P02 up to 20250513. Affected by this issue is some unknown functionality of the file /safeEvent/importFile/. The manipulation of the argument logGeneralFile/logGeneral…
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Medium 4.7
Tmall Demo uploadCategoryImage unrestricted upload
A vulnerability was found in Tmall Demo up to 20250505. It has been declared as critical. This vulnerability affects the function uploadCategoryImage of the file tmall/admin/uploadCategoryImage. The manipulation of the argument File leads to unrestricted uplo…
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Medium 4.7
Tmall Demo uploadProductImage unrestricted upload
A vulnerability was found in Tmall Demo up to 20250505. It has been classified as critical. This affects the function uploadProductImage of the file tmall/admin/uploadProductImage. The manipulation of the argument File leads to unrestricted upload. It is poss…
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Medium 6.3
zongzhige ShopXO ZIP File Payment.php Upload unrestricted upload
A vulnerability was found in zongzhige ShopXO 6.5.0. It has been rated as critical. This issue affects the function Upload of the file app/admin/controller/Payment.php of the component ZIP File Handler. The manipulation of the argument params leads to unrestr…
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Medium 6.7
Admin Authorized File Upload and Execute PHP
File upload and execute vulnerabilities in ASPECT allow PHP script injection if session administrator credentials become compromised. This issue affects ASPECT-Enterprise: through 3.08.03; NEXUS Series: through 3.08.03; MATRIX Series: through 3.08.03.
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Medium 6.7
Admin Authorized File Upload
File upload vulnerabilities are present in ASPECT if session administrator credentials become compromised This issue affects ASPECT-Enterprise: through 3.08.03; NEXUS Series: through 3.08.03; MATRIX Series: through 3.08.03.
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Medium 6.5
Local File Inclusion
Zohocorp ManageEngine ServiceDesk Plus MSP and SupportCenter Plus versions below 14920 are vulnerable to authenticated Local File Inclusion (LFI) in the Admin module, where help card content is loaded.
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Medium 6.4
MapSVG - All Kinds of Maps and Store Locator for WordPress <= 8.6.4 - Authenticated (Contributor+) Stored Cross-Site Scripting
The MapSVG plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in all versions up to, and including, 8.6.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with …
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Medium 4.7
Campcodes Online Shopping Portal edit-subcategory.php unrestricted upload
A vulnerability classified as critical has been found in Campcodes Online Shopping Portal 1.0. This affects an unknown part of the file /admin/edit-subcategory.php. The manipulation of the argument productimage1/productimage2/productimage3 leads to unrestrict…
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Medium 5.4
TYPO3 CMS Vulnerable to Unrestricted File Upload in File Abstraction Layer
TYPO3 is an open source, PHP based web content management system. By design, the file management module in TYPO3’s backend user interface has historically allowed the upload of any file type, with the exception of those that are directly executable in a web s…
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Medium 4.7
PHPGurukul Car Rental Project post-avehical.php unrestricted upload
A vulnerability was found in PHPGurukul Car Rental Project 1.0 and classified as critical. Affected by this issue is some unknown functionality of the file /admin/post-avehical.php. The manipulation of the argument img1/img2/img3/img4/img5 leads to unrestrict…
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Medium 6.3
feng_ha_ha/megagao ssm-erp/production_ssm PictureServiceImpl.java uploadPicture unrestricted upload
A vulnerability classified as critical has been found in feng_ha_ha/megagao ssm-erp and production_ssm 1.0. This affects the function uploadPicture of the file PictureServiceImpl.java. The manipulation of the argument File leads to unrestricted upload. It is …
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Medium 6.3
Campcodes Sales and Inventory System product.php unrestricted upload
A vulnerability has been found in Campcodes Sales and Inventory System 1.0 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /pages/product.php. The manipulation of the argument Picture leads to unrestricted up…
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Medium 6.3
kkFileView fileUpload unrestricted upload
A vulnerability was found in kkFileView 4.4.0. It has been classified as critical. This affects an unknown part of the file /fileUpload. The manipulation of the argument File leads to unrestricted upload. It is possible to initiate the attack remotely. The ex…
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Medium 6.6CVE-2025-47550 Public exploit
WordPress Instantio plugin <= 3.3.16 - Arbitrary File Upload Vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in Themefic Instantio instantio allows Upload a Web Shell to a Web Server.This issue affects Instantio: from n/a through <= 3.3.16.
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Medium 6.3
feng_ha_ha/megagao ssm-erp/production_ssm FileServiceImpl.java uploadFile unrestricted upload
A vulnerability was found in feng_ha_ha/megagao ssm-erp and production_ssm up to 0.0.1. It has been classified as critical. This affects the function uploadFile of the file src/main/java/com/megagao/production/ssm/service/impl/FileServiceImpl.java. The manipu…
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Medium 4.7
itsourcecode Content Management System add_topic.php unrestricted upload
A vulnerability classified as critical has been found in itsourcecode Content Management System 1.0. This affects an unknown part of the file /admin/add_topic.php?category=BBS. The manipulation of the argument Cover Image leads to unrestricted upload. It is p…
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Medium 6.3
kefaming mayi File.php upload unrestricted upload
A vulnerability has been found in kefaming mayi up to 1.3.9 and classified as critical. This vulnerability affects the function Upload of the file app/tools/controller/File.php. The manipulation of the argument File leads to unrestricted upload. The attack ca…
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Medium 6.3
IdeaCMS saveUpload unrestricted upload
A vulnerability, which was classified as critical, was found in IdeaCMS up to 1.6. Affected is the function saveUpload. The manipulation leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed to the public a…
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Medium 6.3
newbee-mall UploadController.java upload unrestricted upload
A vulnerability has been found in newbee-mall 1.0 and classified as critical. Affected by this vulnerability is the function Upload of the file ltd/newbee/mall/controller/common/UploadController.java. The manipulation of the argument File leads to unrestricte…
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Medium 6.3
zhangyanbo2007 youkefu MediaController.java upload unrestricted upload
A vulnerability, which was classified as critical, was found in zhangyanbo2007 youkefu up to 4.2.0. Affected is the function Upload of the file \youkefu-master\src\main\java\com\ukefu\webim\web\handler\resource\MediaController.java. The manipulation of the ar…
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Medium 5.4
Kibana Unrestricted Upload of File with Dangerous Type Can Lead to XSS
Unrestricted upload of a file with dangerous type in Kibana can lead to arbitrary JavaScript execution in a victim’s browser (XSS) via crafted HTML and JavaScript files. The attacker must have access to the Synthetics app AND/OR have access to write to the sy…
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Medium 4.3
Kibana Unrestricted Upload of File
Unrestricted file upload in Kibana allows an authenticated attacker to compromise software integrity by uploading a crafted malicious file due to insufficient server-side validation.
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Medium 4.6
HCL Domino Volt is affected by an unrestricted upload of a dangerous file type
Unsafe default file type filter policy in HCL Domino Volt allows upload of .html file and execution of unsafe JavaScript in deployed applications
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Medium 4.6
HCL Domino Volt is affected by an unrestricted upload of a dangerous file type
Unsafe default file type filter policy in HCL Domino Volt allows upload of .html file and execution of unsafe JavaScript in deployed applications.
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Medium 4.7
youyiio BeyongCms Document Management Page Upload.html unrestricted upload
A vulnerability classified as critical has been found in youyiio BeyongCms 1.6.0. Affected is an unknown function of the file /admin/theme/Upload.html of the component Document Management Page. The manipulation of the argument File leads to unrestricted uploa…
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Medium 6.3CVE-2025-3969 Public exploit
codeprojects News Publishing Site Dashboard Edit Category Page edit-category.php unrestricted upload
A vulnerability was found in codeprojects News Publishing Site Dashboard 1.0. It has been rated as critical. This issue affects some unknown processing of the file /edit-category.php of the component Edit Category Page. The manipulation of the argument catego…
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Medium 4.6
HCL Leap is affected by an unrestricted upload of file with dangerous type vulnerability
Unsafe default file type filter policy in HCL Leap allows execution of unsafe JavaScript in deployed applications.
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Medium 6.3
kuangstudy KuangSimpleBBS QuestionController.java fileUpload unrestricted upload
A vulnerability was found in kuangstudy KuangSimpleBBS 1.0. It has been declared as critical. Affected by this vulnerability is the function fileUpload of the file src/main/java/com/kuang/controller/QuestionController.java. The manipulation of the argument ed…
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Medium 6.3
zhenfeng13 My-BBS Endpoint UploadController.java upload unrestricted upload
A vulnerability, which was classified as critical, was found in zhenfeng13 My-BBS 1.0. This affects the function Upload of the file src/main/java/com/my/bbs/controller/common/UploadController.java of the component Endpoint. The manipulation leads to unrestric…
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Medium 4.7
WCMS Advertisement Image AdvadminController.php sub unrestricted upload
A vulnerability, which was classified as critical, has been found in WCMS 11. This issue affects the function sub of the file app/admin/AdvadminController.php of the component Advertisement Image Handler. The manipulation leads to unrestricted upload. The att…