BuilderEngine CMS 3.5.0 jQuery File Upload php unrestricted upload

Summaryinfo

A vulnerability was found in BuilderEngine CMS 3.5.0. It has been declared as critical. Affected by this issue is some unknown functionality of the file php of the component jQuery File Upload Component. Executing a manipulation can lead to unrestricted upload. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is tracked as CVE-2025-34100. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in BuilderEngine CMS 3.5.0. It has been declared as critical. This vulnerability affects some unknown processing of the file php of the component jQuery File Upload Component. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An unrestricted file upload vulnerability exists in BuilderEngine 3.5.0 via the integration of the elFinder 2.0 file manager and its use of the jQuery File Upload plugin. The plugin fails to properly validate or restrict file types or locations during upload operations, allowing an attacker to upload a malicious .php file and subsequently execute arbitrary PHP code on the server under the context of the web server process. While the root vulnerability lies within the jQuery File Upload component, BuilderEngine’s improper integration and lack of access controls expose this functionality to unauthenticated users, resulting in full remote code execution.

The weakness was disclosed by metanubix. The advisory is available at raw.githubusercontent.com. This vulnerability was named CVE-2025-34100 since 04/15/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/11/2025). This vulnerability is assigned to T1608.002 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21028). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Content Management System

Vendor

• BuilderEngine

Name

• CMS

Version

• 3.5.0

Support

• end of life

CPE 2.3info

• 🔒

CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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