CVE-2025-34100

published 2025-07-10

CVE-2025-34100: 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…

Priority P2 73 critical 9.3 CVSS 4.0

AV N AC L AT N PR N UI N VC H VI H VA H SC N SI N SA N E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

EXPLOIT

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
builderengine	cms	—	—

Detection & IOCs extracted from sources · hover to see the quote

version BuilderEngine 3.5.0↗

• → Monitor for unauthenticated HTTP POST requests to elFinder 2.0 / jQuery File Upload endpoints that result in .php files being written to the web root or upload directories. ↗
• → Detect execution of PHP files from upload directories following a file upload event, which may indicate post-upload webshell execution via this vulnerability. ↗

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