Unauthenticated Arbitrary File Upload RCE in Delta Sql 1.8.2 docs_upload.php

Successful exploitation allows an unauthenticated remote attacker to place and execute arbitrary PHP code on the server. This can lead to full compromise of the vulnerable web application context, including theft or modification of application data, deployment of additional malware or web shells, abuse of the server for further attacks, and potential broader system compromise depending on the privileges of the web server process.

Restrict network access to the affected application until a fix is applied. Disable or remove docs_upload.php if it is not required. Configure the web server to prevent execution of scripts from upload directories, and apply allowlists for permitted file types and destinations. Add monitoring for suspicious multipart/form-data requests and unexpected PHP files in upload paths. If exposure cannot be eliminated, place the application behind authentication controls or IP-based access restrictions to reduce unauthenticated reachability.

Upgrade Delta Sql to a fixed version if one is available from the vendor or project maintainer. If no patched release is available, modify or disable docs_upload.php to enforce strict server-side authentication and authorization, reject executable file types such as .php, validate file content rather than relying only on extensions or MIME types, and store uploaded files outside the web-accessible document root so they cannot be executed directly. Review the upload directory for previously uploaded malicious files and remove any unauthorized content.