Unrestricted Upload of Dangerous File Type (CWE-434)
60 CVEs of this weakness class.
Show as table
| Year published | CVEs | In CISA KEV |
|---|---|---|
| 2016 | 1 | 1 |
| 2017 | 3 | 3 |
| 2018 | 2 | 1 |
| 2019 | 3 | 2 |
| 2020 | 6 | 3 |
| 2021 | 12 | 5 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 5 | 3 |
| 2025 | 11 | 3 |
| 2026 | 16 | 5 |
Exploitation first, with newly exploited CVEs rising above old ones
- CVE-2026-48356CRIT 9.3KEVEPSS 45%
Adobe Commerce is affected by an Unrestricted Upload of File with Dangerous Type vulnerability that could result in arbitrary code execution in the context of the current user, potentially gaining elevated access or control over the victim's account or session. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.
- CVE-2026-48908CRIT 9.8KEVEPSS 89%
A vulnerability in SP Page Builder for Joomla allows unauthenticated users to upload arbitrary files, ultimately resulting in the upload and execution of PHP code.
- CVE-2025-52691CRIT 10KEVEPSS 86%
Successful exploitation of the vulnerability could allow an unauthenticated attacker to upload arbitrary files to any location on the mail server, potentially enabling remote code execution.
- CVE-2026-56290CRIT 9.8KEVEPSS 31%
Joomla Extension - joomlack.fr - Unauthenticated file upload in Page Builder CK extension < 3.6.0 - The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.
- CVE-2026-48939CRIT 9.8KEVEPSS 20%
A vulnerability in the iCagenda extension for Joomla allows the upload of arbitrary files in the file attachment feature, ultimately resulting in PHP code upload and execution.
- CVE-2025-31324CRIT 10KEVEPSS 99%
SAP NetWeaver Visual Composer Metadata Uploader is not protected with a proper authorization, allowing unauthenticated agent to upload potentially malicious executable binaries that could severely harm the host system. This could significantly affect the confidentiality, integrity, and availability of the targeted system.
- CVE-2026-56291CRIT 9.8KEVEPSS 15%
Joomla Extension - balbooa.com - Unauthenticated file upload in Balbooa Forms extension < 2.4.1 - The Joomla extension Balbooa Forms is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.
- CVE-2024-50623CRIT 9.8KEVEPSS 99%
In Cleo Harmony before 5.8.0.21, VLTrader before 5.8.0.21, and LexiCom before 5.8.0.21, there is an unrestricted file upload and download that could lead to remote code execution.
- CVE-2018-15961CRIT 9.8KEVEPSS 100%
Adobe ColdFusion versions July 12 release (2018.0.0.310739), Update 6 and earlier, and Update 14 and earlier have an unrestricted file upload vulnerability. Successful exploitation could lead to arbitrary code execution.
- CVE-2016-3088CRIT 9.8KEVEPSS 99%
The Fileserver web application in Apache ActiveMQ 5.x before 5.14.0 allows remote attackers to upload and execute arbitrary files via an HTTP PUT followed by an HTTP MOVE request.
- CVE-2020-25213CRIT 10KEVEPSS 97%
The File Manager (wp-file-manager) plugin before 6.9 for WordPress allows remote attackers to upload and execute arbitrary PHP code because it renames an unsafe example elFinder connector file to have the .php extension. This, for example, allows attackers to run the elFinder upload (or mkfile and put) command to write PHP code into the wp-content/plugins/wp-file-manager/lib/files/ directory. This was exploited in the wild in August and September 2020.
- CVE-2017-12617HIGH 8.1KEVEPSS 100%
When running Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46 and 7.0.0 to 7.0.81 with HTTP PUTs enabled (e.g. via setting the readonly initialisation parameter of the Default servlet to false) it was possible to upload a JSP file to the server via a specially crafted request. This JSP could then be requested and any code it contained would be executed by the server.
- CVE-2017-12615HIGH 8.1KEVEPSS 100%
When running Apache Tomcat 7.0.0 to 7.0.79 on Windows with HTTP PUTs enabled (e.g. via setting the readonly initialisation parameter of the Default to false) it was possible to upload a JSP file to the server via a specially crafted request. This JSP could then be requested and any code it contained would be executed by the server.
- CVE-2021-31207MED 6.6KEVEPSS 100%
Microsoft Exchange Server Security Feature Bypass Vulnerability
- CVE-2020-8260HIGH 7.2KEVEPSS 96%
A vulnerability in the Pulse Connect Secure < 9.1R9 admin web interface could allow an authenticated attacker to perform an arbitrary code execution using uncontrolled gzip extraction.
- CVE-2017-11357CRIT 9.8KEVEPSS 78%
Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.
- CVE-2021-26828HIGH 8.8KEVEPSS 39%
OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated users to upload and execute arbitrary JSP files via view_edit.shtm.
- CVE-2019-8394MED 6.5KEVEPSS 63%
Zoho ManageEngine ServiceDesk Plus (SDP) before 10.0 build 10012 allows remote attackers to upload arbitrary files via login page customization.
- CVE-2024-57968CRIT 9.9KEVEPSS 32%
Advantive VeraCore before 2024.4.2.1 allows remote authenticated users to upload files to unintended folders (e.g., ones that are accessible during web browsing by other users). upload.aspx can be used for this.
- CVE-2018-4063HIGH 8.8KEVEPSS 27%
An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially crafted HTTP request can upload a file, resulting in executable code being uploaded, and routable, to the webserver. An attacker can make an authenticated HTTP request to trigger this vulnerability.
- CVE-2021-27860CRIT 9.8KEVEPSS 40%
A vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p92 and 10.2.2r44p1 allows a remote, unauthenticated attacker to upload a file to any location on the filesystem. The FatPipe advisory identifier for this vulnerability is FPSA006.
- CVE-2020-13671HIGH 8.8KEVEPSS 36%
Drupal core does not properly sanitize certain filenames on uploaded files, which can lead to files being interpreted as the incorrect extension and served as the wrong MIME type or executed as PHP for certain hosting configurations. This issue affects: Drupal Drupal Core 9.0 versions prior to 9.0.8, 8.9 versions prior to 8.9.9, 8.8 versions prior to 8.8.11, and 7 versions prior to 7.74.
- CVE-2024-7694HIGH 7.2KEVEPSS 2%
ThreatSonar Anti-Ransomware from TeamT5 does not properly validate the content of uploaded files. Remote attackers with administrator privileges on the product platform can upload malicious files, which can be used to execute arbitrary system command on the server.
- CVE-2021-20022HIGH 7.2KEVEPSS 17%
SonicWall Email Security version 10.0.9.x contains a vulnerability that allows a post-authenticated attacker to upload an arbitrary file to the remote host.
- CVE-2021-36741HIGH 8.8KEVEPSS 5%
An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product�s management console in order to exploit this vulnerability.
- CVE-2024-39717HIGH 7.2KEVEPSS 4%
The Versa Director GUI provides an option to customize the look and feel of the user interface. This option is only available for a user logged with Provider-Data-Center-Admin or Provider-Data-Center-System-Admin. (Tenant level users do not have this privilege). The “Change Favicon” (Favorite Icon) option can be mis-used to upload a malicious file ending with .png extension to masquerade as image file. This is possible only after a user with Provider-Data-Center-Admin or Provider-Data-Center-System-Admin has successfully authenticated and logged in.
- CVE-2018-9206CRIT 9.8Likely realEPSS 97%
Unauthenticated arbitrary file upload vulnerability in Blueimp jQuery-File-Upload <= v9.22.0
- CVE-2025-34299CRIT 9.8Likely realEPSS 73%
Monsta FTP versions 2.11 and earlier contain a vulnerability that allows unauthenticated arbitrary file uploads. This flaw enables attackers to execute arbitrary code by uploading a specially crafted file from a malicious (S)FTP server.
- CVE-2026-0740CRIT 9.8Likely realEPSS 63%
The Ninja Forms - File Uploads plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'NF_FU_AJAX_Controllers_Uploads::handle_upload' function in all versions up to, and including, 3.3.26. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. Note: The vulnerability was partially patched in version 3.3.25 and fully patched in version 3.3.27.
- CVE-2024-53677CRIT 9.8Likely realEPSS 72%
File upload logic in Apache Struts is flawed. An attacker can manipulate file upload params to enable paths traversal and under some circumstances this can lead to uploading a malicious file which can be used to perform Remote Code Execution. This issue affects Apache Struts: from 2.0.0 before 6.4.0. Users are recommended to upgrade to version 6.4.0 at least and migrate to the new file upload mechanism https://struts.apache.org/core-developers/file-upload . If you are not using an old file upload logic based on FileuploadInterceptor your application is safe. You can find more details in https://cwiki.apache.org/confluence/display/WW/S2-067
- CVE-2023-38836HIGH 8.8Likely realEPSS 69%
File Upload vulnerability in BoidCMS v.2.0.0 allows a remote attacker to execute arbitrary code by adding a GIF header to bypass MIME type checks.
- CVE-2021-21351MED 5.4EPSS 82%
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
- CVE-2025-64095CRIT 10EPSS 47%
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to 10.1.1, the default HTML editor provider allows unauthenticated file uploads and images can overwrite existing files. An unauthenticated user can upload and replace existing files allowing defacing a website and combined with other issue, injection XSS payloads. This vulnerability is fixed in 10.1.1.
- CVE-2025-26319CRIT 9.8Likely realEPSS 56%
FlowiseAI Flowise v2.2.6 was discovered to contain an arbitrary file upload vulnerability in /api/v1/attachments.
- CVE-2021-21346MED 6.1EPSS 76%
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
- CVE-2021-21344MED 5.3EPSS 76%
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
- CVE-2025-6440CRIT 9.8EPSS 33%
The WooCommerce Designer Pro plugin for WordPress, used by the Pricom - Printing Company & Design Services WordPress theme, is vulnerable to arbitrary file uploads due to missing file type validation in the 'wcdp_save_canvas_design_ajax' function in all versions up to, and including, 1.9.26. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
- CVE-2026-58480CRIT 9.8Real · low riskEPSS 4%
Blocksy Companion Pro plugin for WordPress before 2.1.47 contains an unauthenticated arbitrary file upload vulnerability that allows attackers to upload executable files by bypassing extension validation in the save_attachments function exposed through the Advanced Reviews feature. Attackers can exploit the Custom Fonts extension's flawed strpos() substring check by uploading double-extension filenames such as shell.woff2.php, causing the validation to pass on the substring match while the web server executes the file as PHP, achieving remote code execution.
- CVE-2026-5524CRIT 9.8Real · low riskEPSS 3%
The Divi Form Builder plugin for WordPress is vulnerable to Arbitrary File Upload leading to Remote Code Execution in all versions up to and including 5.1.8. This is due to insufficient file extension validation in the do_image_upload() function where user-supplied input from the acceptFileTypes POST parameter is directly interpolated into a regular expression used to validate uploaded files. Attackers can specify PHP-executable extensions such as .phtml, .phar, .php5, or .php7 to bypass the plugin's .htaccess protection which only blocks .php files specifically. Additionally, on Nginx-based servers, the .htaccess protection is completely ineffective as Nginx does not process .htaccess files. This makes it possible for unauthenticated attackers (who can obtain a nonce from any public page containing a form) to upload executable PHP files to the publicly accessible /wp-content/uploads/de_fb_uploads/ directory and achieve Remote Code Execution by accessing the uploaded file via HTTP. The vulnerability was partially patched in version 5.1.3.
- CVE-2026-57827CRIT 9.8Real · low riskEPSS 2%
Joomla Extension - rsjoomla.com - Unauthenticated file upload in RSFiles component < 1.17.12 - The Joomla extension RSFiles is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.
- CVE-2026-36669CRIT 9.8Real · low riskEPSS 1%
An unauthenticated arbitrary file upload vulnerability in ck_upload_handler.php in Feng Office 3.11.13.11 allows remote attackers to upload malicious files (such as .html) to the web-accessible /tmp/ directory.
- CVE-2026-23697HIGH 8.8Real · low riskEPSS 1%
Vtiger CRM before 8.4.0 contains an authenticated file upload vulnerability that allows low-privileged users to achieve remote code execution by uploading a .phar file containing arbitrary PHP code through the Documents module, bypassing the extension denylist in config.inc.php which omits the .phar extension. The uploaded file is stored with its original .phar extension under the web-accessible storage directory, and a misconfigured .htaccess using Apache 2.2 syntax is silently ignored on Apache 2.4 deployments, allowing unauthenticated HTTP requests to directly execute the uploaded PHP payload.
- CVE-2026-10818HIGH 8.1Real · low riskEPSS 0%
The WPForms Pro plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.10.1.1 via the ajax_chunk_upload_finalize function. This is due to the file type validation occurring after chunk metadata and file contents have already been written to disk, and the assembled file not being deleted upon validation failure. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.
- CVE-2026-9067CRIT 9.1Real · low riskEPSS 0%
The Schema & Structured Data for WP & AMP WordPress plugin before 1.60 does not check user capabilities on its frontend AJAX file-upload handlers and does not validate the actual content of uploaded files against the endpoint's intended media type, allowing unauthenticated users to upload any file type accepted by WordPress's media library through endpoints that should only accept images or videos.
- CVE-2025-61808CRIT 9.1EPSS 11%
ColdFusion versions 2025.4, 2023.16, 2021.22 and earlier are affected by an Unrestricted Upload of File with Dangerous Type vulnerability that could lead to arbitrary code execution by a high priviledged attacker. Exploitation of this issue does not require user interaction and scope is changed.
- CVE-2026-23698HIGH 7.2Real · low riskEPSS 1%
Vtiger CRM through 8.4.0 contains an authenticated remote code execution vulnerability in the admin module import feature that allows administrator-level attackers to upload arbitrary PHP files by submitting a crafted zip archive through the ModuleManager import function, which extracts contents directly into the modules/ directory under the web root without validating file types beyond the manifest.xml descriptor. Attackers can place executable PHP files in the modules/ directory that become directly accessible via HTTP, bypassing Vtiger's authentication and authorization layer entirely since Apache resolves the path and invokes the PHP interpreter before the application routing layer is involved, resulting in a persistent web shell independent of the originating session.
- CVE-2019-19576CRIT 9.8EPSS 26%
class.upload.php in verot.net class.upload before 1.0.3 and 2.x before 2.0.4, as used in the K2 extension for Joomla! and other products, omits .phar from the set of dangerous file extensions.
- CVE-2025-9872HIGH 8.8EPSS 14%
Insufficient filename validation in Ivanti Endpoint Manager before 2024 SU3 SR1 and 2022 SU8 SR2 allows a remote unauthenticated attacker to achieve remote code execution. User interaction is required.
- CVE-2026-39292HIGH 7.3Real · low riskEPSS 0%
Falco Solutions PHPPageBuilder v0.31.0 contains an unrestricted file upload vulnerability in the pagemanager/pagebuilder module that allows remote attackers to upload arbitrary files and achieve remote code execution. The vulnerability exists due to insufficient validation of uploaded file types and executable content.
- CVE-2025-61687HIGH 8.3EPSS 11%
Flowise is a drag & drop user interface to build a customized large language model flow. A file upload vulnerability in version 3.0.7 of FlowiseAI allows authenticated users to upload arbitrary files without proper validation. This enables attackers to persistently store malicious Node.js web shells on the server, potentially leading to Remote Code Execution (RCE). The system fails to validate file extensions, MIME types, or file content during uploads. As a result, malicious scripts such as Node.js-based web shells can be uploaded and stored persistently on the server. These shells expose HTTP endpoints capable of executing arbitrary commands if triggered. The uploaded shell does not automatically execute, but its presence allows future exploitation via administrator error or chained vulnerabilities. This presents a high-severity threat to system integrity and confidentiality. As of time of publication, no known patched versions are available.
- CVE-2015-10138CRIT 9.8Real · low riskEPSS 2%
The Work The Flow File Upload plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the jQuery-File-Upload-9.5.0 server and test files in versions up to, and including, 2.5.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected sites server which may make remote code execution possible.
- CVE-2023-46474HIGH 7.2EPSS 21%
File Upload vulnerability PMB v.7.4.8 allows a remote attacker to execute arbitrary code and escalate privileges via a crafted PHP file uploaded to the start_import.php file.
- CVE-2021-39141HIGH 8.5EPSS 16%
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
- CVE-2020-1102HIGH 8.8EPSS 15%
A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account. Exploitation of this vulnerability requires that a user uploads a specially crafted SharePoint application package to an affected version of SharePoint. The security update addresses the vulnerability by correcting how SharePoint checks the source markup of application packages.
- CVE-2026-5704MED 5EPSS 0%
A flaw was found in tar. A remote attacker could exploit this vulnerability by crafting a malicious archive, leading to hidden file injection with fully attacker-controlled content. This bypasses pre-extraction inspection mechanisms, potentially allowing an attacker to introduce malicious files onto a system without detection.
- CVE-2021-39146HIGH 8.5EPSS 14%
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
- CVE-2020-1024HIGH 8.8EPSS 10%
A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account. Exploitation of this vulnerability requires that a user uploads a specially crafted SharePoint application package to an affected version of SharePoint. The security update addresses the vulnerability by correcting how SharePoint checks the source markup of application packages.
- CVE-2020-1023HIGH 8.8EPSS 10%
A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account. Exploitation of this vulnerability requires that a user uploads a specially crafted SharePoint application package to an affected version of SharePoint. The security update addresses the vulnerability by correcting how SharePoint checks the source markup of application packages.
- CVE-2021-21347MED 6.1EPSS 14%
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
- CVE-2021-21350MED 5.3EPSS 15%
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to execute arbitrary code only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.