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.
CVE-2021-4443 (GCVE-0-2021-4443)
Vulnerability from cvelistv5 – Published: 2024-10-16 06:43 – Updated: 2026-04-08 16:33
VLAI
Title
WordPress Mega Menu <= 2.0.6 - Arbitrary File Creation
Summary
The WordPress Mega Menu plugin for WordPress is vulnerable to Arbitrary File Creation in versions up to, and including, 2.0.6 via the compiler_save AJAX action. This makes it possible for unauthenticated attackers to create arbitrary PHP files that can be used to execute malicious code.
Severity
9.8 (Critical)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| quadlayers | QuadMenu – Mega Menu |
Affected:
0 , ≤ 2.0.6
(semver)
|
Credits
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CVE-2021-4449 (GCVE-0-2021-4449)
Vulnerability from cvelistv5 – Published: 2024-10-16 06:43 – Updated: 2026-04-08 16:42
VLAI
Title
ZoomSounds <= 5.96 - Unauthenticated Arbitrary File Upload
Summary
The ZoomSounds plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'savepng.php' file in versions up to, and including, 5.96. 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-2021-4457 is a duplicate of this.
Severity
9.8 (Critical)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ZoomIt | ZoomSounds - WordPress Wave Audio Player with Playlist |
Affected:
0 , ≤ 5.96
(semver)
|
Credits
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CVE-2021-4455 (GCVE-0-2021-4455)
Vulnerability from cvelistv5 – Published: 2025-04-19 07:23 – Updated: 2026-04-08 16:40
VLAI
Title
Wordpress Plugin Smart Product Review <= 1.0.4 - Unauthenticated Arbitrary File Upload
Summary
The Wordpress Plugin Smart Product Review plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 1.0.4. 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)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Codeflist | Wordpress Plugin Smart Product Review |
Affected:
0 , ≤ 1.0.4
(semver)
|
Credits
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CVE-2021-4462 (GCVE-0-2021-4462)
Vulnerability from cvelistv5 – Published: 2025-11-10 22:32 – Updated: 2026-04-07 14:05 X_Known Exploited Vulnerability
VLAI
Title
Employee Records System v1.0 Arbitrary File Upload RCE
Summary
Employee Records System version 1.0 contains an unrestricted file upload vulnerability that allows a remote unauthenticated attacker to upload arbitrary files via the uploadID.php endpoint; uploaded files can be executed because the application does not perform proper server-side validation. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-06 UTC.
Severity
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.sourcecodester.com/php/11393/employee… | product |
| https://www.exploit-db.com/exploits/49596 | exploit |
| https://www.vulncheck.com/advisories/employees-re… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Employee Records System | Employee Records System |
Affected:
1.0
|
Date Public
2021-02-26 00:00
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CVE-2021-47753 (GCVE-0-2021-47753)
Vulnerability from cvelistv5 – Published: 2026-01-15 15:52 – Updated: 2026-04-07 14:05
VLAI
Title
phpKF CMS 3.00 Beta y6 - Remote Code Execution (RCE) (Unauthenticated)
Summary
phpKF CMS 3.00 Beta y6 contains an unauthenticated file upload vulnerability that allows remote attackers to execute arbitrary code by bypassing file extension checks. Attackers can upload a PHP file disguised as a PNG, rename it, and execute system commands through a crafted web shell parameter.
Severity
9.8 (Critical)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/50610 | exploit |
| https://www.phpkf.com/ | product |
| https://www.phpkf.com/indirme.php | product |
Date Public
2021-12-20 00:00
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CVE-2021-47757 (GCVE-0-2021-47757)
Vulnerability from cvelistv5 – Published: 2026-01-15 15:52 – Updated: 2026-03-05 01:28
VLAI
Title
Chikitsa Patient Management System 2.0.2 - 'plugin' Remote Code Execution (RCE) (Authenticated)
Summary
Chikitsa Patient Management System 2.0.2 contains an authenticated remote code execution vulnerability in the backup restoration functionality. Authenticated attackers can upload a modified backup zip file with a malicious PHP shell to execute arbitrary system commands on the server.
Severity
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/50572 | exploit |
| https://www.chikitsa.io/ | product |
| https://github.com/sanskruti-technologies/chikitsa | product |
| https://sourceforge.net/projects/chikitsa/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| dharashah | Chikitsa Patient Management System |
Affected:
2.0.2
|
Date Public
2021-03-12 00:00
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CVE-2021-47758 (GCVE-0-2021-47758)
Vulnerability from cvelistv5 – Published: 2026-01-15 15:52 – Updated: 2026-03-05 01:28
VLAI
Title
Chikitsa Patient Management System 2.0.2 - Remote Code Execution (RCE) (Authenticated)
Summary
Chikitsa Patient Management System 2.0.2 contains an authenticated remote code execution vulnerability that allows attackers to upload malicious PHP plugins through the module upload functionality. Authenticated attackers can generate and upload a ZIP plugin with a PHP backdoor that enables arbitrary command execution on the server through a weaponized PHP script.
Severity
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/50571 | exploit |
| https://www.chikitsa.io/ | product |
| https://github.com/sanskruti-technologies/chikitsa | product |
| https://sourceforge.net/projects/chikitsa/ | product |
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1 product
| Vendor | Product | Version | |
|---|---|---|---|
| dharashah | Chikitsa Patient Management System |
Affected:
2.0.2
|
Date Public
2021-03-12 00:00
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CVE-2021-47783 (GCVE-0-2021-47783)
Vulnerability from cvelistv5 – Published: 2026-01-15 23:25 – Updated: 2026-04-07 14:06
VLAI
Title
Phpwcms 1.9.30 - Arbitrary File Upload
Summary
Phpwcms 1.9.30 contains a file upload vulnerability that allows authenticated attackers to upload malicious SVG files with embedded JavaScript. Attackers can upload crafted SVG payloads through the multiple file upload feature to potentially execute cross-site scripting attacks on the platform.
Severity
5.4 (Medium)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/50363 | exploit |
| http://www.phpwcms.org/ | product |
| https://www.vulncheck.com/advisories/phpwcms-arbi… | third-party-advisory |
Date Public
2021-10-01 00:00
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CVE-2021-47788 (GCVE-0-2021-47788)
Vulnerability from cvelistv5 – Published: 2026-01-15 23:25 – Updated: 2026-03-05 01:28
VLAI
Title
WebsiteBaker 2.13.0 - Remote Code Execution (RCE) (Authenticated)
Summary
WebsiteBaker 2.13.0 contains an authenticated remote code execution vulnerability that allows users with language editing permissions to execute arbitrary code. Attackers can exploit the language installation endpoint by manipulating language installation parameters to achieve remote code execution on the server.
Severity
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/50310 | exploit |
| https://websitebaker.org/ | product |
| https://www.vulncheck.com/advisories/websitebaker… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Websitebaker | WebsiteBaker |
Affected:
2.13.0
|
Date Public
2021-09-18 00:00
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CVE-2021-47819 (GCVE-0-2021-47819)
Vulnerability from cvelistv5 – Published: 2026-01-15 15:52 – Updated: 2026-03-05 01:28
VLAI
Title
ProjeQtOr Project Management 9.1.4 - Remote Code Execution
Summary
ProjeQtOr Project Management 9.1.4 contains a file upload vulnerability that allows guest users to upload malicious PHP files with arbitrary code execution capabilities. Attackers can upload a PHP script through the profile attachment section and execute system commands by accessing the uploaded file with a specially crafted request parameter.
Severity
9.8 (Critical)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/49919 | exploit |
| https://www.projeqtor.org | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Projeqtor | ProjeQtOr Project Management |
Affected:
9.1.4
|
Date Public
2021-05-29 00:00
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Mitigation
Phase: Architecture and Design
Description:
- 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 ID: MIT-21
Phase: Architecture and Design
Strategy: Enforcement by Conversion
Description:
- 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
Phase: Architecture and Design
Description:
- Consider storing the uploaded files outside of the web document root entirely. Then, use other mechanisms to deliver the files dynamically. [REF-423]
Mitigation ID: MIT-5
Phase: Implementation
Strategy: Input Validation
Description:
- 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
Phase: Architecture and Design
Description:
- 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
Phase: Implementation
Strategy: Input Validation
Description:
- 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
Phase: Implementation
Description:
- When running on a web server that supports case-insensitive filenames, perform case-insensitive evaluations of the extensions that are provided.
Mitigation ID: MIT-15
Phase: Architecture and Design
Description:
- 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
Phase: Implementation
Description:
- 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
Phase: Implementation
Description:
- 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 ID: MIT-17
Phases: Architecture and Design, Operation
Strategy: Environment Hardening
Description:
- 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 ID: MIT-22
Phases: Architecture and Design, Operation
Strategy: Sandbox or Jail
Description:
- 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.