CVE-2025-34100

Public Exploit
BuilderEngine 3.5.0 RCE via Unauthenticated Arbitrary File Upload

Description

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.

Category

9.3
CVSS
Severity: Critical
CVSS 4.0 •
EPSS 0.26%
Third-Party Advisory alertlogic.com Third-Party Advisory vulncheck.com
Affected: BuilderEngine CMS
Published at:
Updated at:

References

Link Tags
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/multi/http/builderengine_upload_exec.rb exploit
https://www.exploit-db.com/exploits/40390 exploit
https://support.alertlogic.com/hc/en-us/articles/115004703183-BuilderEngine-Content-Management-System-CMS-elFinder-2-0-Arbitrary-File-Upload third party advisory
https://vulncheck.com/advisories/builder-engine-unauthenticated-arbitrary-file-upload third party advisory

Frequently Asked Questions

What is the severity of CVE-2025-34100?
CVE-2025-34100 has been scored as a critical severity vulnerability.
How to fix CVE-2025-34100?
To fix CVE-2025-34100, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-34100 being actively exploited in the wild?
It is possible that CVE-2025-34100 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-34100?
CVE-2025-34100 affects BuilderEngine CMS.
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