CVE-2025-34100

UNKNOWN 0.0

BuilderEngine 3.5.0 RCE via Unauthenticated Arbitrary File Upload

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-434 CWE-20 CWE-306
Vendor	builderengine
Product	cms
Published	Jul 10, 2025
Last Updated	Apr 7, 2026

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Affected Versions

BuilderEngine / CMS

3.5.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

metanubix