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
3,441 results · Feed
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High 8.8
An arbitrary file upload vulnerability in the component /admin/cmsTemplate/savePlace of PublicCMS v4.0.202302.e allows …
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Medium 6.2
An arbitrary file upload vulnerability in the component /admin/cmsTemplate/doUpload of PublicCMS v4.0.202302.e allows a…
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High 7.0
PAN-OS: File Upload Vulnerability in the Panorama Web Interface
An arbitrary file upload vulnerability in Palo Alto Networks Panorama software enables an authenticated read-write administrator with access to the web interface to disrupt system processes and crash the Panorama. Repeated attacks eventually cause the Panoram…
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Medium 4.7
Croogo Setting Theme unrestricted upload
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability classified as critical has been found in Croogo up to 4.0.7. This affects an unknown part of the file admin/settings/settings/prefix/Theme of the component Setting Handler. The manipulation of the argument Conte…
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High 8.8
Advanced File Manager Shortcode <= 2.5.3 - Authenticated (Contributor+) Arbitrary File Upload
The Advanced File Manager Shortcodes plugin for WordPress is vulnerable to arbitrary file uploads in all versions up to, and including, 2.5.3. This makes it possible for authenticated attackers with contributor access or above to upload arbitrary files on the…
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High 8.8
A vulnerability has been identified in SINEMA Remote Connect Server (All versions < V3.2 SP1). The affected application…
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Critical 9.9
WordPress Newspack Blocks plugin <= 3.0.8 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in Automattic Newspack Blocks allows Upload a Web Shell to a Web Server.This issue affects Newspack Blocks: from n/a through 3.0.8.
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Critical 9.9
WordPress Zita Elementor Site Library plugin <= 1.6.1 - Arbitrary Code Execution vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in WPZita Zita Elementor Site Library allows Upload a Web Shell to a Web Server.This issue affects Zita Elementor Site Library: from n/a through 1.6.1.
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Critical 9.9
WordPress Church Admin plugin <= 4.4.6 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in andy_moyle Church Admin church-admin.This issue affects Church Admin: from n/a through <= 4.4.6.
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Critical 9.8
IQ Testimonials <= 2.2.7 - Unauthenticated Arbitrary File Upload
The IQ Testimonials plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the 'process_image_upload' function in versions up to, and including, 2.2.7. This makes it possible for unauthenticated attackers to u…
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Critical 9.8
Gutenberg Forms <= 2.2.9 - Unauthenticated Arbitrary File Upload
The Gutenberg Forms plugin for WordPress is vulnerable to arbitrary file uploads due to the users can specify the allowed file types in the 'upload' function in versions up to, and including, 2.2.9. This makes it possible for unauthenticated attackers to uplo…
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High 7.2
Bit Form <= 2.13.3 - Authenticated (Administrator+) Arbitrary File Upload
The Bit Form plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'iconUpload' function in all versions up to, and including, 2.13.3. This makes it possible for authenticated attackers, with administrator-lev…
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High 8.8
Default Thumbnail Plus <= 1.0.2.3 - Authenticated (Contributor+) Arbitrary File Upload
The Default Thumbnail Plus plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'get_cache_image' function in all versions up to, and including, 1.0.2.3. This makes it possible for authenticated attackers, wi…
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Critical 9.6
WordPress Generate PDF using Contact Form 7 plugin <= 4.1.2 - CSRF to Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in ZealousWeb Generate PDF using Contact Form 7 generate-pdf-using-contact-form-7.This issue affects Generate PDF using Contact Form 7: from n/a through <= 4.1.2.
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High 8.8
Modern Events Calendar <= 7.11.0 - Authenticated (Subscriber+) Arbitrary File Upload
The Modern Events Calendar plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the set_featured_image function in all versions up to, and including, 7.11.0. This makes it possible for authenticated attackers, wi…
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Low 3.3
[CVE-2024-34692] Unrestricted File upload vulnerability in SAP Enable Now
Due to missing verification of file type or content, SAP Enable Now allows an authenticated attacker to upload arbitrary files. These files include executables which might be downloaded and executed by the user which could host malware. On successful exploita…
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High 8.8
IMGspider <= 2.3.10 - Authenticated (Contributor+) Arbitrary File Upload via 'upload'
The IMGspider plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'upload' function in all versions up to, and including, 2.3.10. This makes it possible for authenticated attackers, with contributor-level an…
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High 8.8
IMGspider <= 2.3.10 - Authenticated (Contributor+) Arbitrary File Upload via 'upload_img_file'
The IMGspider plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'upload_img_file' function in all versions up to, and including, 2.3.10. This makes it possible for authenticated attackers, with contributor…
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High 7.8
yt-dlp and youtube-dl vulnerable to file system modification and RCE through improper file-extension sanitization
`yt-dlp` and `youtube-dl` are command-line audio/video downloaders. Prior to the fixed versions, `yt-dlp` and `youtube-dl` do not limit the extensions of downloaded files, which could lead to arbitrary filenames being created in the download folder (and path …
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Medium 6.3
SourceCodester Home Owners Collection Management System unrestricted upload
A vulnerability was found in SourceCodester Home Owners Collection Management System 1.0 and classified as critical. This issue affects some unknown processing of the file /classes/Users.php?f=save. The manipulation of the argument img leads to unrestricted u…
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Medium 4.3
Insecure File Upload in the indexing/preview REST endpoint
In Splunk Enterprise versions below 9.2.2, 9.1.5, and 9.0.10 and Splunk Cloud Platform versions below 9.1.2312.200, an authenticated, low-privileged user who does not hold the admin or power Splunk roles could upload a file with an arbitrary extension using t…
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High 7.2
CHANGING Mobile One Time Password - Arbitrary File Upload
CHANGING Mobile One Time Password's uploading function in a hidden page does not filter file type properly. Remote attackers with administrator privilege can exploit this vulnerability to upload and run malicious file to execute system commands.
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Critical 9.9CVE-2024-37762 Public exploit
MachForm up to version 21 is affected by an authenticated unrestricted file upload which leads to a remote code executi…
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Critical 9.8
BC Security Empire Path Traversal RCE
BC Security Empire before 5.9.3 is vulnerable to a path traversal issue that can lead to remote code execution. A remote, unauthenticated attacker can exploit this vulnerability over HTTP by acting as a normal agent, completing all cryptographic handshakes, a…
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Critical 9.1
Arbitrary File Write via /v1/runs API endpoint in lightning-ai/pytorch-lightning
A vulnerability in the /v1/runs API endpoint of lightning-ai/pytorch-lightning v2.2.4 allows attackers to exploit path traversal when extracting tar.gz files. When the LightningApp is running with the plugin_server, attackers can deploy malicious tar.gz plugi…
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High 7.3
itsourcecode Online Food Ordering System addproduct.php unrestricted upload
A vulnerability has been found in itsourcecode Online Food Ordering System up to 1.0 and classified as critical. This vulnerability affects unknown code of the file /addproduct.php. The manipulation of the argument photo leads to unrestricted upload. The atta…
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High 8.8
Auto Featured Image <= 1.2 - Authenticated (Contributor+) Arbitrary File Upload
The Auto Featured Image plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'create_post_attachment_from_url' function in all versions up to, and including, 1.2. This makes it possible for authenticated atta…
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High 8.8CVE-2024-5008 EPSS 17%
WhatsUp Gold APM Unrestricted File Upload Remote Code Execution Vulnerability
In WhatsUp Gold versions released before 2023.1.3, an authenticated user with certain permissions can upload an arbitrary file and obtain RCE using Apm.UI.Areas.APM.Controllers.Api.Applications.AppProfileImportController.
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Critical 9.9
Avaya IP Office One-X Portal File Upload Vulnerability
An unrestricted file upload vulnerability in Avaya IP Office was discovered that could allow remote command or code execution via the One-X component. Affected versions include all versions prior to 11.1.3.1.
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Critical 9.8
An arbitrary file upload vulnerability in /fileupload/upload.cfm in Daemon PTY Limited FarCry Core framework before 7.2…
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Critical 10.0
WordPress InstaWP Connect plugin <= 0.1.0.38 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in InstaWP InstaWP Connect instawp-connect.This issue affects InstaWP Connect: from n/a through <= 0.1.0.38.
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High 8.9
Bludit - Remote Code Execution (RCE) through Image API
A security vulnerability has been identified in Bludit, allowing authenticated attackers to execute arbitrary code through the Image API. This vulnerability arises from improper handling of file uploads, enabling malicious actors to upload and execute PHP fil…
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High 8.9
Bludit - Remote Code Execution (RCE) through File API
A security vulnerability has been identified in Bludit, allowing attackers with knowledge of the API token to upload arbitrary files through the File API which leads to arbitrary code execution on the server. This vulnerability arises from improper handling o…
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Medium 6.3
SourceCodester Simple Online Bidding System unrestricted upload
A vulnerability was found in SourceCodester Simple Online Bidding System 1.0. It has been classified as critical. This affects an unknown part of the file /admin/ajax.php?action=save_settings. The manipulation of the argument img leads to unrestricted upload.…
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Critical 9.1
WordPress Squeeze plugin <= 1.4 - Arbitrary File Upload vulnerability
Unrestricted Upload of File with Dangerous Type vulnerability in Bogdan Bendziukov Squeeze allows Code Injection.This issue affects Squeeze: from n/a through 1.4.
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Critical 9.2
Adminer and AdminerEvo vulnerable to directory traversal and file upload
The file upload plugin in Adminer and AdminerEvo allows an attacker to upload a file with a table name of “..” to the root of the Adminer directory. The attacker can effectively guess the name of the uploaded file and execute it. Adminer is no longer supporte…
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High 7.4
Unrestricted Upload of Files in edu-sharing
An authenticated user can upload arbitrary files in the upload function for collection preview images. An attacker may upload an HTML file that includes malicious JavaScript code which will be executed if a user visits the direct URL of the collection preview…
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High 8.8
Arbitrary File Write Vulnerability in Spring Cloud Data Flow
Spring Cloud Data Flow is a microservices-based Streaming and Batch data processing in Cloud Foundry and Kubernetes. The Skipper server has the ability to receive upload package requests. However, due to improper sanitization for upload path, a malicious user…
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High 8.8CVE-2024-6132 Public exploit
Pexels: Free Stock Photos <= 1.2.2 - Authenticated (Contributor+) Arbitrary File Upload
The Pexels: Free Stock Photos plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'pexels_fsp_images_options_validate' function in all versions up to, and including, 1.2.2. This makes it possible for authent…
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Critical 9.9
Image Optimizer, Resizer and CDN – Sirv <= 7.2.6 - Authenticated (Contributor+) Arbitrary File Upload
The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the sirv_upload_file_by_chanks AJAX action in all versions up to, and including, 7.2.6. This makes it possible for …