Common Weakness Enumeration

CWE-434

Allowed

Unrestricted Upload of File with Dangerous Type

Abstraction: Base · Status: Draft

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

6449 vulnerabilities reference this CWE, most recent first.

CVE-2026-32559 (GCVE-0-2026-32559)

Vulnerability from cvelistv5 – Published: 2026-08-24 21:31 – Updated: 2026-08-27 14:19

Title

WordPress UltimateAI plugin <= 3.1.0 - Arbitrary File Upload vulnerability

Summary

Subscriber Arbitrary File Upload in UltimateAI <= 3.1.0 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 2026-08-27 14:19 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

Patchstack mitre root Scorecard

References

1 reference

URL	Tags
https://patchstack.com/database/wordpress/plugin/…	vdb-entry

Impacted products

1 product

Vendor	Product	Version
tophive	UltimateAI	Affected: n/a , ≤ 3.1.0 (custom)

Credits

Jamaal ahmed | Patchstack Bug Bounty Program

Show details on NVD website

JSON

To clipboard

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CVE-2026-32536 (GCVE-0-2026-32536)

Vulnerability from cvelistv5 – Published: 2026-03-25 16:15 – Updated: 2026-04-29 09:52

Title

WordPress Green Downloads plugin <= 2.08 - Arbitrary File Upload vulnerability

Summary

Unrestricted Upload of File with Dangerous Type vulnerability in halfdata Green Downloads halfdata-paypal-green-downloads allows Using Malicious Files.This issue affects Green Downloads: from n/a through <= 2.08.

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 2026-03-25 20:20 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

Patchstack mitre root Scorecard

References

1 reference

URL	Tags
https://patchstack.com/database/Wordpress/Plugin/…	vdb-entry

Impacted products

1 product

Vendor	Product	Version
halfdata	Green Downloads	Affected: n/a , ≤ <= 2.08 (custom)

Date Public

2026-03-25 17:12

Credits

Phat RiO | Patchstack Bug Bounty Program

Show details on NVD website

JSON

To clipboard

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CVE-2026-32524 (GCVE-0-2026-32524)

Vulnerability from cvelistv5 – Published: 2026-03-25 16:15 – Updated: 2026-04-29 09:52

Title

WordPress Photo Engine plugin <= 6.4.9 - Arbitrary File Upload vulnerability

Summary

Unrestricted Upload of File with Dangerous Type vulnerability in Jordy Meow Photo Engine wplr-sync allows Upload a Web Shell to a Web Server.This issue affects Photo Engine: from n/a through <= 6.4.9.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/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 2026-03-26 18:35 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

Patchstack mitre root Scorecard

References

1 reference

URL	Tags
https://patchstack.com/database/Wordpress/Plugin/…	vdb-entry

Impacted products

1 product

Vendor	Product	Version
Jordy Meow	Photo Engine	Affected: n/a , ≤ <= 6.4.9 (custom)

Date Public

2026-03-25 17:12

Credits

Nguyen Ba Khanh | Patchstack Bug Bounty Program

Show details on NVD website

JSON

To clipboard

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CVE-2026-32523 (GCVE-0-2026-32523)

Vulnerability from cvelistv5 – Published: 2026-03-25 16:15 – Updated: 2026-04-29 09:52

Title

WordPress WPJAM Basic plugin <= 6.9.2 - Arbitrary File Upload vulnerability

Summary

Unrestricted Upload of File with Dangerous Type vulnerability in denishua WPJAM Basic wpjam-basic allows Using Malicious Files.This issue affects WPJAM Basic: from n/a through <= 6.9.2.

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 2026-03-26 13:20 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

Patchstack mitre root Scorecard

References

1 reference

URL	Tags
https://patchstack.com/database/Wordpress/Plugin/…	vdb-entry

Impacted products

1 product

Vendor	Product	Version
denishua	WPJAM Basic	Affected: n/a , ≤ <= 6.9.2 (custom)

Date Public

2026-03-25 17:12

Credits

NumeX | Patchstack Bug Bounty Program

Show details on NVD website

JSON

To clipboard

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CVE-2026-32482 (GCVE-0-2026-32482)

Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-29 09:52

Title

WordPress Ona theme < 1.24 - Arbitrary File Upload vulnerability

Summary

Unrestricted Upload of File with Dangerous Type vulnerability in deothemes Ona ona allows Upload a Web Shell to a Web Server.This issue affects Ona: from n/a through < 1.24.

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 2026-03-26 19:42 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

Patchstack mitre root Scorecard

References

1 reference

URL	Tags
https://patchstack.com/database/Wordpress/Theme/o…	vdb-entry

Impacted products

1 product

Vendor	Product	Version
deothemes	Ona	Affected: n/a , ≤ < 1.24 (custom)

Date Public

2026-03-25 17:12

Credits

Phat RiO | Patchstack Bug Bounty Program

Show details on NVD website

JSON

To clipboard

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CVE-2026-32475 (GCVE-0-2026-32475)

Vulnerability from cvelistv5 – Published: 2026-08-19 17:24 – Updated: 2026-08-20 18:28

Title

WordPress Elementor Pro plugin <= 4.2.1 - Arbitrary File Upload vulnerability

Summary

Unrestricted Upload of File with Dangerous Type vulnerability in Elementor Elementor Pro allows Using Malicious Files. This issue affects Elementor Pro: from n/a through 4.2.1.

Severity

9 (Critical)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/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 2026-08-19 19:30 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

Patchstack mitre root Scorecard

References

2 references

URL	Tags
https://patchstack.com/database/wordpress/plugin/…	vdb-entry
https://patchstack.com/articles/critical-unauthen…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Elementor	Elementor Pro	Affected: n/a , ≤ 4.2.1 (custom)

Credits

Tin Pham (TF1T) of VietSunshine Cyber Security Services | Patchstack Bug Bounty Program

Show details on NVD website

JSON

To clipboard

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CVE-2026-32474 (GCVE-0-2026-32474)

Vulnerability from cvelistv5 – Published: 2026-08-18 13:59 – Updated: 2026-08-18 19:48

Title

WordPress Templatiq plugin <= 0.2.5 - Arbitrary File Upload vulnerability

Summary

Contributor Arbitrary File Upload in Templatiq <= 0.2.5 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 2026-08-18 19:31 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

Patchstack mitre root Scorecard

References

1 reference

URL	Tags
https://patchstack.com/database/wordpress/plugin/…	vdb-entry

Impacted products

1 product

Vendor	Product	Version
wpWax	Templatiq	Affected: n/a , ≤ 0.2.5 (custom)

Credits

daroo | Patchstack Bug Bounty Program

Show details on NVD website

JSON

To clipboard

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CVE-2026-32463 (GCVE-0-2026-32463)

Vulnerability from cvelistv5 – Published: 2026-08-18 13:59 – Updated: 2026-08-18 14:19

Title

WordPress Sync Post With Other Site plugin <= 1.9.3 - Arbitrary File Upload vulnerability

Summary

Contributor Arbitrary File Upload in Sync Post With Other Site <= 1.9.3 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 2026-08-18 14:19 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

Patchstack mitre root Scorecard

References

1 reference

URL	Tags
https://patchstack.com/database/wordpress/plugin/…	vdb-entry

Impacted products

1 product

Vendor	Product	Version
Kamlesh Parmar	Sync Post With Other Site	Affected: n/a , ≤ 1.9.3 (custom)

Credits

Nabil Irawan | Patchstack Bug Bounty Program

Show details on NVD website

JSON

To clipboard

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CVE-2026-32278 (GCVE-0-2026-32278)

Vulnerability from cvelistv5 – Published: 2026-03-23 21:28 – Updated: 2026-03-24 18:41

Title

Connect CMS has Stored Cross-site Scripting (XSS) in the File Field of its Form Plugin

Summary

Connect-CMS is a content management system. In versions on the 1.x series up to and including 1.41.0 and versions on the 2.x series up to and including 2.41.0, a Stored Cross-site Scripting (XSS) issue exists in the file field of the Form Plugin. Versions 1.41.1 and 2.41.1 contain a patch.

Severity

8.2 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-24 18:41 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

GitHub_M mitre root Scorecard

References

4 references

URL	Tags
https://github.com/opensource-workshop/connect-cm…	x_refsource_CONFIRM
https://github.com/opensource-workshop/connect-cm…	x_refsource_MISC
https://github.com/opensource-workshop/connect-cm…	x_refsource_MISC
https://github.com/opensource-workshop/connect-cm…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
opensource-workshop	connect-cms	Affected: < 1.41.1 Affected: >= 2.0.0, < 2.41.1

Show details on NVD website

JSON

To clipboard

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CVE-2026-30821 (GCVE-0-2026-30821)

Vulnerability from cvelistv5 – Published: 2026-03-07 05:07 – Updated: 2026-03-09 20:44

Title

Flowise: Arbitrary File Upload via MIME Spoofing

Summary

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.0.13, the /api/v1/attachments/:chatflowId/:chatId endpoint is listed in WHITELIST_URLS, allowing unauthenticated access to the file upload API. While the server validates uploads based on the MIME types defined in chatbotConfig.fullFileUpload.allowedUploadFileTypes, it implicitly trusts the client-provided Content-Type header (file.mimetype) without verifying the file's actual content (magic bytes) or extension (file.originalname). Consequently, an attacker can bypass this restriction by spoofing the Content-Type as a permitted type (e.g., application/pdf) while uploading malicious scripts or arbitrary files. Once uploaded via addArrayFilesToStorage, these files persist in backend storage (S3, GCS, or local disk). This vulnerability serves as a critical entry point that, when chained with other features like static hosting or file retrieval, can lead to Stored XSS, malicious file hosting, or Remote Code Execution (RCE). This issue has been patched in version 3.0.13.

Severity

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-09 20:34 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

GitHub_M mitre root Scorecard

References

2 references

URL	Tags
https://github.com/FlowiseAI/Flowise/security/adv…	x_refsource_CONFIRM
https://github.com/FlowiseAI/Flowise/releases/tag…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
FlowiseAI	Flowise	Affected: < 3.0.13

Show details on NVD website

JSON

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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