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 5.4
A File Upload Validation Bypass vulnerability has been identified in the HCL BigFix Service Management (SM)
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Medium 6.1
WP ULike Pro <= 1.9.3 - Unauthenticated Limited Arbitrary File Upload
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Medium 6.1
FormCms avatar upload feature has a stored cross-site scripting (XSS) vulnerability
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Medium 6.3
GreenCMS index.php unrestricted upload
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Medium 6.3
xuhuisheng lemon CmsArticleController.java uploadImage unrestricted upload
A weakness has been identified in xuhuisheng lemon up to 1.13.0. This affects the function uploadImage of the file CmsArticleController.java of the component com.mossle.cms.web.CmsArticleController.uploadImage. This manipulation of the argument Upload causes …
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Medium 6.3
YiFang CMS P_file.php mergeMultipartUpload unrestricted upload
A flaw has been found in YiFang CMS up to 2.0.5. This affects the function mergeMultipartUpload of the file app/utils/base/plugin/P_file.php. This manipulation of the argument File causes unrestricted upload. Remote exploitation of the attack is possible. The…
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Medium 6.3
givanz Vvveb media.php unrestricted upload
A weakness has been identified in givanz Vvveb up to 1.0.7.2. Affected is an unknown function of the file /system/traits/media.php. Executing manipulation of the argument files[] can lead to unrestricted upload. The attack can be launched remotely. The exploi…
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Medium 6.8
Liferay Portal allows unrestricted upload of file in the style books component
The Liferay Portal 7.4.0 through 7.3.3.131, and Liferay DXP 2024.Q4.0, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.12 and 7.4 GA through update 92 allows the upload of unrestricted files in the style books component t…
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Medium 6.3
INFINITT Healthcare INFINITT PACS Unrestricted Upload of File with Dangerous Type
An attacker could exploit this vulnerability by uploading arbitrary files via a specific service, which could lead to system compromise.
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Medium 6.3
INFINITT Healthcare INFINITT PACS Unrestricted Upload of File with Dangerous Type
An attacker could exploit this vulnerability by uploading arbitrary files via the a specific endpoint, leading to unauthorized remote code execution or system compromise.
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Medium 4.7
Emlog Pro blogger.php unrestricted upload
A security vulnerability has been detected in Emlog Pro up to 2.5.18. This affects an unknown function of the file /admin/blogger.php?action=update_avatar. Such manipulation of the argument image leads to unrestricted upload. It is possible to launch the atta…
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Medium 6.8
Mattermost Shared Channel Upload Type Validation Bypass
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2, 10.10.x <= 10.10.0 fail to validate upload types in remote cluster upload sessions which allows a system admin to upload non-attachment file types via shared channels…
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Medium 5.1
Liferay Portal Unvalidated File Upload
Liferay Portal 7.4.0 through 7.4.3.132, and Liferay DXP 2025.Q1.0 through 2025.Q1.1, 2024.Q4.0 through 2024.Q4.7, 2024.Q3.1 through 2024.Q3.13, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.14 and 7.4 GA through update 92 allows remote unauthenticat…
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Medium 6.3
itsourcecode Online Tour and Travel Management System travellers.php unrestricted upload
A vulnerability was detected in itsourcecode Online Tour and Travel Management System 1.0. This vulnerability affects unknown code of the file /admin/operations/travellers.php. The manipulation of the argument photo results in unrestricted upload. The attack …
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Medium 4.3
A vulnerability exists in riscv-boom SonicBOOM 1.2 (BOOMv1.2) processor implementation, where valid virtual-to-physical…
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Medium 4.5
MoonShine Arbitrary File Upload Vulnerability
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Medium 6.3
Acrel Environmental Monitoring Cloud Platform UploadNewsImg unrestricted upload
A vulnerability was identified in Acrel Environmental Monitoring Cloud Platform up to 20250804. This affects an unknown part of the file /NewsManage/UploadNewsImg. The manipulation of the argument File leads to unrestricted upload. It is possible to initiate …
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Medium 6.3
linlinjava litemall Endpoint AdminStorageController.java create unrestricted upload
A vulnerability has been found in linlinjava litemall up to 1.8.0. This vulnerability affects the function create of the file litemall-admin-api/src/main/java/org/linlinjava/litemall/admin/web/AdminStorageController.java of the component Endpoint. The manipul…
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Medium 4.1
A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions), RUGGEDCOM ROX MX5000RE (All versions), RUGG…
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Medium 6.3
code-projects eBlog Site File Upload save-slider.php unrestricted upload
A vulnerability was identified in code-projects eBlog Site 1.0. Affected by this vulnerability is an unknown functionality of the file /native/admin/save-slider.php of the component File Upload Module. The manipulation leads to unrestricted upload. The attack…
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Medium 6.3
zlt2000 microservices-platform FileController.java upload unrestricted upload
A vulnerability was identified in zlt2000 microservices-platform up to 6.0.0. Affected by this vulnerability is the function Upload of the file zlt-business/file-center/src/main/java/com/central/file/controller/FileController.java. The manipulation leads to u…
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Medium 6.3
Qiyuesuo Eelectronic Signature Platform Scheduled Task upload execute unrestricted upload
A vulnerability was found in Qiyuesuo Eelectronic Signature Platform up to 4.34 and classified as critical. Affected by this issue is the function execute of the file /api/code/upload of the component Scheduled Task Handler. The manipulation of the argument F…
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Medium 6.3
linlinjava litemall upload unrestricted upload
A vulnerability classified as critical has been found in linlinjava litemall up to 1.8.0. Affected is the function Upload of the file /wx/storage/upload. The manipulation of the argument File leads to unrestricted upload. It is possible to launch the attack r…
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Medium 6.4
In Agora Foundation Agora fall23-Alpha1 before 690ce56, there is XSS via a profile picture to server/controller/userCon…
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Medium 6.5CVE-2025-52078 Public exploit
File upload vulnerability in Writebot AI Content Generator SaaS React Template thru 4.0.0, allowing remote attackers to…
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Medium 6.3
Exrick xboot UploadController.java upload unrestricted upload
A vulnerability was found in Exrick xboot up to 3.3.4. It has been declared as critical. This vulnerability affects the function Upload of the file xboot-fast/src/main/java/cn/exrick/xboot/modules/base/controller/common/UploadController.java. The manipulation…
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Medium 6.4CVE-2025-54962 Public exploit
/edit-user in webserver in OpenPLC Runtime 3 through 9cd8f1b allows authenticated users to upload arbitrary files (such…
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Medium 6.3
code-projects Kitchen Treasure userregistration.php unrestricted upload
A vulnerability, which was classified as critical, was found in code-projects Kitchen Treasure 1.0. This affects an unknown part of the file /userregistration.php. The manipulation of the argument photo leads to unrestricted upload. It is possible to initiate…
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Medium 4.7
Campcodes Online Hotel Reservation System edit_room.php unrestricted upload
A vulnerability classified as critical has been found in Campcodes Online Hotel Reservation System 1.0. This affects an unknown part of the file /admin/edit_room.php. The manipulation of the argument photo leads to unrestricted upload. It is possible to initi…
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Medium 6.5
Multiple versions of PowerCMS allow unrestricted upload of dangerous files. If a product administrator accesses a malic…
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Medium 6.3
openviglet shio ShStaticFileAPI.java shStaticFileUpload unrestricted upload
A vulnerability classified as critical has been found in openviglet shio up to 0.3.8. Affected is the function shStaticFileUpload of the file shio-app/src/main/java/com/viglet/shio/api/staticfile/ShStaticFileAPI.java. The manipulation of the argument filename…
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Medium 4.7
299Ko CMS File Management view unrestricted upload
A vulnerability classified as critical has been found in 299Ko CMS 2.0.0. This affects an unknown part of the file /admin/filemanager/view of the component File Management. The manipulation leads to unrestricted upload. It is possible to initiate the attack r…
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Medium 6.3
code-projects Online Ordering System product.php unrestricted upload
A vulnerability classified as critical has been found in code-projects Online Ordering System 1.0. Affected is an unknown function of the file /admin/product.php. The manipulation of the argument image leads to unrestricted upload. It is possible to launch th…
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Medium 6.3
code-projects Voting System candidates_add.php unrestricted upload
A vulnerability was found in code-projects Voting System 1.0 and classified as critical. Affected by this issue is some unknown functionality of the file /admin/candidates_add.php. The manipulation of the argument photo leads to unrestricted upload. The attac…
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Medium 6.3
code-projects Document Management System insert.php unrestricted upload
A vulnerability, which was classified as critical, has been found in code-projects Document Management System 1.0. This issue affects some unknown processing of the file /insert.php. The manipulation of the argument uploaded_file leads to unrestricted upload.…
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Medium 6.3
zhousg letao product.js unrestricted upload
A vulnerability, which was classified as critical, has been found in zhousg letao up to 7d8df0386a65228476290949e0413de48f7fbe98. This issue affects some unknown processing of the file routes\bf\product.js. The manipulation of the argument pictrdtz leads to u…
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Medium 6.3
jerryshensjf JPACookieShop 蛋糕商城JPA版 GoodsController.java addGoods unrestricted upload
A vulnerability was found in jerryshensjf JPACookieShop 蛋糕商城JPA版 1.0. It has been classified as critical. Affected is the function addGoods of the file GoodsController.java. The manipulation leads to unrestricted upload. It is possible to launch the attack re…
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Medium 6.6
Dell AppSync, version(s) 4.6.0.0, contains an Unrestricted Upload of File with Dangerous Type vulnerability. A high pri…
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Medium 6.3
yangzongzhuan RuoYi CommonController.java uploadFile unrestricted upload
A vulnerability was found in yangzongzhuan RuoYi up to 4.8.1 and classified as critical. This issue affects the function uploadFile of the file ruoyi-admin/src/main/java/com/ruoyi/web/controller/common/CommonController.java. The manipulation of the argument F…
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Medium 4.7
Codecanyon iDentSoft Account Setting Page updateSetting unrestricted upload
A vulnerability was found in Codecanyon iDentSoft 2.0. It has been classified as critical. This affects an unknown part of the file /clinica/profile/updateSetting of the component Account Setting Page. The manipulation of the argument photo leads to unrestric…