EIP-2026-106135

PRE-CVE

Constructr CMS 3.03 - Arbitrary File Upload

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-106135. PoCs published by plucky.

AI-analyzed exploit summary This Perl script exploits an arbitrary file upload vulnerability in Constructr CMS 3.03 by sending a POST request to /backend/media.php with a file attachment, bypassing restrictions to achieve remote code execution (RCE). The script parses the response to retrieve the uploaded file's new name and prints its location.

Description

Constructr CMS 3.03 - Arbitrary File Upload

Exploits (1)

exploitdb WORKING POC
by plucky · perlwebappsphp
https://www.exploit-db.com/exploits/17035

This Perl script exploits an arbitrary file upload vulnerability in Constructr CMS 3.03 by sending a POST request to /backend/media.php with a file attachment, bypassing restrictions to achieve remote code execution (RCE). The script parses the response to retrieve the uploaded file's new name and prints its location.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Constructr CMS 3.03
No auth needed
Prerequisites: Network access to the target · Constructr CMS 3.03 installed · Perl environment with LWP::UserAgent and HTTP::Request::Common
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026