Common Weakness Enumeration

CWE-434

Allowed

Unrestricted Upload of File with Dangerous Type

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

2626 vulnerabilities reference this CWE, most recent first.

CVE-2026-93388 (GCVE-0-2026-93388)

Vulnerability from cvelistv5 – Published: 2026-10-14 01:27 – Updated: 2026-10-14 17:55
VLAI
Title
Printcart Store - Web to Print Product Designer for WooCommerce (PCDesigner) <= 2.9.1 - Unauthenticated Arbitrary File Upload to Remote Code Execution via nbdesigner_copy_image_from_url
Summary
The Printcart Store (PCDesigner / NB Designer) plugin for WooCommerce is vulnerable to unauthenticated arbitrary file upload leading to remote code execution in all versions up to, and including, 2.9.1 The nbdesigner_copy_image_from_url AJAX action is registered for logged-out callers (wp_ajax_nopriv_), and its Google Drive branch rebuilds the destination filename from the raw, attacker-supplied gapi[name] parameter — bypassing the jpg/jpeg/png/gif allow-list applied on the other branch — and writes the fetched bytes to a web-accessible directory (wp-content/uploads/nbdesigner/temp/). This makes it possible for unauthenticated attackers to write a .php file to a web-served, PHP-executing location and, by supplying their own Google Drive file and OAuth token as the content source, execute arbitrary code on the server. The required save-design nonce is handed to anonymous callers by the nbd_check_use_logged_in endpoint, so it presents no barrier.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 17:55 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence CNA
References
Impacted products
Credits
Osman Hussein
Show details on NVD website
To clipboard 

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CVE-2026-93352 (GCVE-0-2026-93352)

Vulnerability from cvelistv5 – Published: 2026-09-23 21:36 – Updated: 2026-09-26 13:30 X_Open Source
VLAI
Title
Laravel-Mediable 7.0.0 < 7.0.2 RCE via .pht File Upload
Summary
Laravel-Mediable 7.0.0 before 7.0.2 contains an incomplete patch for CVE-2026-49972 in which the .pht extension is absent from the forbidden_extensions blocklist in config/mediable.php. The blocklist introduced to address CVE-2026-49972 includes phpt but omits pht, which Apache executes as PHP via the default FilesMatch directive on Debian and Ubuntu systems. An attacker can upload a .pht file that passes all validation in MediaUploader::verifyExtension() and File::sanitizeFileName() because pht is not present in the blocklist, causing the file to be written to disk and executed as PHP when requested, enabling remote code execution with the privileges of the web server process.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-24 15:45 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
plank laravel-mediable Affected: 7.0.0 , < 7.0.2 (semver)
Create a notification for this product.
Date Public
2026-09-15 00:00
Credits
Aniket Akhade
Show details on NVD website
To clipboard 

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CVE-2026-93031 (GCVE-0-2026-93031)

Vulnerability from cvelistv5 – Published: 2026-09-18 19:36 – Updated: 2026-09-19 14:11
VLAI
Title
WP Cloud Plugins Use-your-Drive, Out-of-the-Box, Share-one-Drive, and Lets-Box <= 3.8.3 - Authenticated (Subscriber+) Arbitrary File Upload via Media Import
Summary
The WP Cloud Plugins Use-your-Drive, Out-of-the-Box, Share-one-Drive, and Lets-Box plugins for WordPress are vulnerable to Arbitrary File Upload in all versions from 2.0 up to, and including, 3.8.3 via the download_file_to_uploads function. This is due to the import action being registered for unauthenticated users via wp_ajax_nopriv_, a missing capability check in can_import(), and the imported file's extension and contents not being validated against get_allowed_mime_types() before it is written to the uploads directory. This makes it possible for authenticated attackers, with subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-19 13:20 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence CNA
References
Impacted products
Credits
WP Cloud Plugins
Show details on NVD website
To clipboard 

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CVE-2026-92980 (GCVE-0-2026-92980)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:03 – Updated: 2026-10-01 15:21 X_Open Source
VLAI
Title
HortusFox-Web < 6.1 Remote Code Execution via Import/Export
Summary
HortusFox-Web prior to version 6.1 contains a remote code execution vulnerability that allows authenticated administrators to execute arbitrary OS commands as the web server user by abusing the Import/Export functionality. Attackers can leverage the Import/Export feature, which is intended solely for data portability, to deploy and execute malicious code on the underlying application server host.
Severity
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 18:07 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
danielbrendel hortusfox-web Affected: 0 , < 6.1 (custom)
    cpe:2.3:a:hortusfox:hortusfox:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-17 00:00
Credits
Adam Młynarczyk VulnCheck
Show details on NVD website
To clipboard 

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CVE-2026-92895 (GCVE-0-2026-92895)

Vulnerability from cvelistv5 – Published: 2026-11-06 11:17 – Updated: 2026-11-06 15:16
VLAI
Title
Live2DWebCanvas <= 2.2.1 - Unauthenticated Arbitrary File Upload via 'modelApi' Parameter
Summary
The Live2DWebCanvas plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.2.1 via the download_one_file function. This is due to missing file extension whitelist and MIME type validation in download_one_file() when writing files derived from attacker-controlled manifest entries to the web-served plugin directory. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible when the plugin's apiType setting is configured as custom-local (self-hosted model mode), a non-default option that requires a paid license and prints the REST nonce and one-time session tokens into every front-end page.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 15:10 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence CNA
References
Impacted products
Vendor Product Version
jiangweifang Live2DWebCanvas Affected: 0 , ≤ 2.2.1 (semver)
Create a notification for this product.
Credits
Osman Hussein
Show details on NVD website
To clipboard 

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CVE-2026-92820 (GCVE-0-2026-92820)

Vulnerability from cvelistv5 – Published: 2026-10-02 05:30 – Updated: 2026-10-02 20:06
VLAI
Title
Ninja Forms - File Uploads <= 3.3.34 - Unauthenticated Arbitrary File Upload
Summary
The Ninja Forms - File Uploads plugin for WordPress is vulnerable to arbitrary file operations in all versions up to, and including, 3.3.34 via the external (Amazon S3) upload flow. The plugin trusts an attacker-supplied file path from the form submission and stores it as the upload's file_path, which is then used without validation to attach a file to the form's notification email (arbitrary file read), to write fetched content (arbitrary file write, leading to remote code execution when the external store is configured), and in a scheduled deletion (arbitrary file deletion). This makes it possible for unauthenticated attackers to read, write, or delete arbitrary files on the server. Exploitation requires the site to use the plugin's External File Upload (Amazon S3) action; the read variant additionally requires a form Email action configured to attach the uploaded file.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 20:06 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence CNA
References
Impacted products
Vendor Product Version
SaturdayDrive Ninja Forms - File Uploads Affected: 0 , ≤ 3.3.34 (semver)
Create a notification for this product.
Credits
daroo
Show details on NVD website
To clipboard 

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CVE-2026-92553 (GCVE-0-2026-92553)

Vulnerability from cvelistv5 – Published: 2026-10-16 06:41 – Updated: 2026-10-16 15:09
VLAI
Title
YaySMTP <= 2.7.7 - Authenticated (Subscriber+) Arbitrary File Upload via Attachment Filename Extension
Summary
The YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.7.7 via the putFile function. This is due to insufficient file type validation in the putFile function, as sanitize_file_name() does not strip executable extensions and no allow-list, MIME check, or safe-extension rename is applied. This makes it possible for authenticated attackers, with subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. The only server-side guard is a .htaccess file containing 'Require all denied' written by writeGuards(), which is silently ignored by nginx and by Apache configured with AllowOverride None, meaning RCE is fully achievable on those server configurations.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 14:54 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
Wordfence CNA
References
Impacted products
Credits
Wordfence PRISM
Show details on NVD website
To clipboard 

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CVE-2026-92532 (GCVE-0-2026-92532)

Vulnerability from cvelistv5 – Published: 2026-10-07 10:48 – Updated: 2026-10-07 17:45
VLAI
Title
Unrestricted Upload of File with Dangerous Type in BugTracker.NET
Summary
Unrestricted file upload vulnerability in the BugTracker.NET attachment functionality. An authenticated user with administrator privileges could modify the application configuration to store files in a directory accessible via the web interface. Due to the lack of proper file extension validation, an attacker could upload a malicious ASPX file and subsequently execute it on the server. A successful exploit could allow arbitrary code execution with the privileges of the account used by the web service.
Severity
7.5 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 17:44 UTC
CWE
  • CWE-434 - Unrestricted upload of file with dangerous type
Assigner
INCIBE CNA
References
Impacted products
Vendor Product Version
BugTracker.NET BugTracker.NET Affected: all versions
    cpe:2.3:a:bugtracker.net:bugtracker.net:all_versions:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-07 10:41
Credits
Álvaro Monforte de la Huerga Juan Gabriel Ruiz Fernández
Show details on NVD website
To clipboard 

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CVE-2026-92247 (GCVE-0-2026-92247)

Vulnerability from cvelistv5 – Published: 2026-09-16 02:45 – Updated: 2026-09-16 19:17
VLAI
Title
synaptikcms synaptik-cms Admin File Manager file-manager.php rename unrestricted upload
Summary
A security vulnerability has been detected in synaptikcms synaptik-cms up to 1.3.4.4. This affects the function rename of the file admin/file-manager.php of the component Admin File Manager. The manipulation leads to unrestricted upload. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 1.3.5 is able to mitigate this issue. It is suggested to upgrade the affected component.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
4.7 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
4.7 (Medium)
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 19:16 UTC
CWE
Assigner
VulDB CNA
References
Impacted products
Vendor Product Version
synaptikcms synaptik-cms Affected: 1.3.4.0
Affected: 1.3.4.1
Affected: 1.3.4.2
Affected: 1.3.4.3
Affected: 1.3.4.4
Unaffected: 1.3.5
    cpe:2.3:a:synaptikcms:synaptik-cms:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Dinesh_goud (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-91849 (GCVE-0-2026-91849)

Vulnerability from cvelistv5 – Published: 2026-09-15 15:30 – Updated: 2026-09-17 15:30
VLAI
Title
WuzhiCMS Avatar Upload index.php setAvatar unrestricted upload
Summary
A security flaw has been discovered in WuzhiCMS up to 4.1.0. This affects the function member::setAvatar of the file /index.php?m=member&f=user&v=setAvatar of the component Avatar Upload. The manipulation of the argument File results in unrestricted upload. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 15:18 UTC
CWE
Assigner
VulDB CNA
References
URL Tags
https://vuldb.com/vuln/404077 vdb-entrytechnical-description
https://vuldb.com/vuln/404077/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-91849 third-party-advisory
https://vuldb.com/submit/933702 third-party-advisory
https://github.com/wuzhicms/wuzhicms/issues/219 exploitissue-tracking
https://github.com/wuzhicms/wuzhicms/ product
Impacted products
Vendor Product Version
n/a WuzhiCMS Affected: 4.0
Affected: 4.1.0
    cpe:2.3:a:wuzhicms:wuzhicms:*:*:*:*:*:*:*:*
Credits
ZAST.AI (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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          "url": "https://vuldb.com/cve/CVE-2026-91849"
        },
        {
          "name": "Submit #933702 | wuzhicms \u003c=4.1.0 Arbitrary File Write (RCE)",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/933702"
        },
        {
          "tags": [
            "exploit",
            "issue-tracking"
          ],
          "url": "https://github.com/wuzhicms/wuzhicms/issues/219"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/wuzhicms/wuzhicms/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-15T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-09-15T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-09-15T10:49:49.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "WuzhiCMS Avatar Upload index.php setAvatar unrestricted upload",
      "x_generator": [
        "VulDB PVTS v202609"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-91849",
    "datePublished": "2026-09-15T15:30:07.894Z",
    "dateReserved": "2026-09-15T08:44:39.948Z",
    "dateUpdated": "2026-09-17T15:30:00.655Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
Mitigation
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]

Mitigation MIT-21
Architecture and Design

Strategy: Enforcement by Conversion

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.

Mitigation
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]

Mitigation MIT-5
Implementation

Strategy: Input Validation

  • 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.
Mitigation
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.

Mitigation
Implementation

Strategy: Input Validation

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]

Mitigation
Implementation

When running on a web server that supports case-insensitive filenames, perform case-insensitive evaluations of the extensions that are provided.

Mitigation MIT-15
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.

Mitigation
Implementation

Do not rely exclusively on sanity checks of file contents to ensure that the file is of the expected type and size. It may be possible for an attacker to hide code in some file segments that will still be executed by the server. For example, GIF images may contain a free-form comments field.

Mitigation
Implementation

Do not rely exclusively on the MIME content type or filename attribute when determining how to render a file. Validating the MIME content type and ensuring that it matches the extension is only a partial solution.

Mitigation MIT-17
Architecture and Design Operation

Strategy: Environment Hardening

Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.

Mitigation MIT-22
Architecture and Design Operation

Strategy: Sandbox or Jail

  • Run the code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
  • OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
  • This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
  • Be careful to avoid CWE-243 and other weaknesses related to jails.
CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs

In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.

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