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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.

6247 vulnerabilities reference this CWE, most recent first.

CVE-2026-75865 (GCVE-0-2026-75865)

Vulnerability from cvelistv5 – Published: 2026-09-01 02:26 – Updated: 2026-09-01 15:14
VLAI
Title
WPLP Cookie Consent <= 4.4.1 - Unauthenticated Arbitrary File Upload via 'upload-logo' REST Endpoint
Summary
The WPLP Cookie Consent – Cookie Banner & Consent Management for GDPR, CCPA & Google Consent Mode plugin for WordPress is vulnerable to arbitrary file upload due to missing file type validation in the saas_upload_logo() function combined with an authorization bypass on the WPLP connector REST endpoints in all versions up to, and including, 4.4.1. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
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 2026-09-01 15:14 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Credits
Supakiad S. (m3ez)
Show details on NVD website
To clipboard 

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CVE-2026-75496 (GCVE-0-2026-75496)

Vulnerability from cvelistv5 – Published: 2026-08-25 16:36 – Updated: 2026-08-25 18:05
VLAI
Title
Webkul QloApps improper file upload validation
Summary
Webkul QloApps does not perform proper validation on uploaded file extensions or MIME types before moving the file to a publicly accessible directory. A remote, authenticated attacker with administrative privileges could upload executable files and achieve remote code execution. Fixed in 153ec1c.
Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · cisa-cg (v2.0.3)
Decision recorded 2026-08-17 20:27 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version
Webkul QloApps Affected: 0 , < 153ec1c (custom)
Unaffected: 153ec1c
Create a notification for this product.
Date Public
2026-07-20 00:00
Credits
leediay153
Show details on NVD website
To clipboard 

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CVE-2026-74845 (GCVE-0-2026-74845)

Vulnerability from cvelistv5 – Published: 2026-08-17 09:53 – Updated: 2026-08-17 10:18
VLAI
Title
2100 Technology｜Official Document Management System - Arbitrary File Upload
Summary
Official Document Management System developed by 2100 Technology has an Arbitrary File Upload vulnerability, allowing authenticated remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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 2026-08-17 10:18 UTC
CWE
  • CWE-434 - Unrestricted upload of file with dangerous type
Assigner
References
Impacted products
Date Public
2026-08-17 06:27
Show details on NVD website
To clipboard 

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CVE-2026-74803 (GCVE-0-2026-74803)

Vulnerability from cvelistv5 – Published: 2026-08-19 13:39 – Updated: 2026-08-21 04:48
VLAI
Title
Joomla Extension - yootheme.com - Unauthenticated arbitrary file upload in Zoo < 4.1.64
Summary
Joomla Extension - yootheme.com - Unauthenticated arbitrary file upload in Zoo < 4.1.64 - The image element accepts arbitrary files when the client-supplied Content-Type falls within the image MIME group.
Severity
10 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:35 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
URL Tags
https://www.yootheme.com/ product
Impacted products
Credits
Phil Taylor, mysites.guru
Show details on NVD website
To clipboard 

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CVE-2026-74767 (GCVE-0-2026-74767)

Vulnerability from cvelistv5 – Published: 2026-08-15 21:56 – Updated: 2026-08-17 19:40
VLAI
Title
Unbounded DAA Decompression in Pandora Allows Denial of Service via Decompression Bomb
Summary
Pandora contains a denial-of-service vulnerability in its handling of DAA (Direct Access Archive) files. When extracting the internal ISO image from a DAA archive, compressed chunks were decompressed using zlib.decompress() without enforcing a limit on the resulting uncompressed data. An attacker able to submit a crafted DAA file containing highly compressed data could cause Pandora to decompress a relatively small input into a very large amount of data in memory. Because the decompressed chunks are accumulated to construct the internal ISO image, this could result in excessive memory consumption and potentially CPU exhaustion, causing the extraction worker to become unresponsive, terminate, or affect the availability of the Pandora service. The patch introduces bounded decompression using decompressobj().decompress() with max_extracted_filesize, verifies the cumulative size of decompressed chunks, and raises a dedicated ZipBomb exception when the configured limit is exceeded. Pandora then aborts extraction and reports the file as too large.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 19:40 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version
pandora-analysis pandora Affected: 0 , ≤ 1.12.5 (semver)
Create a notification for this product.
Credits
Jeroen Pinoy Raphael Vinot
Show details on NVD website
To clipboard 

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CVE-2026-74018 (GCVE-0-2026-74018)

Vulnerability from cvelistv5 – Published: 2026-08-20 12:07 – Updated: 2026-08-20 14:35
VLAI
Title
WordPress Warehouse Cargo theme <= 2.6.9 - Arbitrary File Upload vulnerability
Summary
Subscriber Arbitrary File Upload in Warehouse Cargo <= 2.6.9 versions.
Severity
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 14:35 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version
themagnifico52 Warehouse Cargo Affected: n/a , ≤ 2.6.9 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-74016 (GCVE-0-2026-74016)

Vulnerability from cvelistv5 – Published: 2026-08-20 12:07 – Updated: 2026-08-20 18:43
VLAI
Title
WordPress Smart Cleaning theme <= 4.8.6 - Arbitrary File Upload vulnerability
Summary
Subscriber Arbitrary File Upload in Smart Cleaning <= 4.8.6 versions.
Severity
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 18:43 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version
themagnifico52 Smart Cleaning Affected: n/a , ≤ 4.8.6 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-74014 (GCVE-0-2026-74014)

Vulnerability from cvelistv5 – Published: 2026-08-20 12:07 – Updated: 2026-08-20 16:27
VLAI
Title
WordPress IT Residence theme <= 3.2.1 - Arbitrary File Upload vulnerability
Summary
Subscriber Arbitrary File Upload in IT Residence <= 3.2.1 versions.
Severity
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:59 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version
indithemes IT Residence Affected: n/a , ≤ 3.2.1 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-73996 (GCVE-0-2026-73996)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:00 – Updated: 2026-08-18 15:10
VLAI
Title
WordPress Masteriyo - LMS plugin <= 2.3.2 - Arbitrary File Upload vulnerability
Summary
Unauthenticated Arbitrary File Upload in Masteriyo - LMS <= 2.3.2 versions.
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 2026-08-18 15:10 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version
masteriyo Masteriyo - LMS Affected: n/a , ≤ 2.3.2 (custom)
Create a notification for this product.
Credits
20kilograma | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-73373 (GCVE-0-2026-73373)

Vulnerability from cvelistv5 – Published: 2026-08-18 16:03 – Updated: 2026-08-19 04:44
VLAI
Title
Joomla! Core - [20260810] - Unrestricted uploads of SHTML files in Joomla 1.0.0-5.4.7, 6.0.0-6.1.2
Summary
Joomla! Core - [20260810] - Unrestricted uploads of SHTML files in Joomla 1.0.0-5.4.7, 6.0.0-6.1.2 - The default list of dangerous files did not include SHTML files. On servers that executed these files, that could lead to code execution.
Severity
8.9 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 00:00 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version
Joomla! Project Joomla! CMS Affected: 1.0.0-5.4.6
Affected: 6.0.0-6.1.2
Create a notification for this product.
Joomla! Project Joomla! Framework Filesystem package Affected: 1.0.0-3.3.0
Affected: 4.0.0-4.2.0
Create a notification for this product.
Credits
Valentin Lobstein (Chocapikk)
Show details on NVD website
To clipboard 

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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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