CVE-2025-34100 BuilderEngine 3.5.0 RCE via Unauthenticated Arbitrary File Upload
Unauthenticated attackers can upload malicious PHP files via the integrated file manager to achieve remote code execution on BuilderEngine CMS servers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-34100?
CVE-2025-34100 is a critical vulnerability in BuilderEngine CMS, published on 10 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-34100?
How do I fix CVE-2025-34100?
No fix has been published for CVE-2025-34100 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-34100 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34100 exists.
Public exploit code: 1 Metasploit module and 2 proofs of concept on GitHub.
Sources
Also known as GHSA-q4px-f6mf-p9w2.