EIP-2026-106120

PRE-CVE

Concrete 5.4.1 1 - 'rcID' Cross-Site Scripting

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-106120. PoCs published by Aung Khant.

AI-analyzed exploit summary This is a functional proof-of-concept for a stored XSS vulnerability in Concrete CMS 5.4.1.1. The exploit leverages unsanitized input in the 'rcID' parameter to inject malicious JavaScript, which executes in the context of the affected site.

Description

Concrete 5.4.1 1 - 'rcID' Cross-Site Scripting

Exploits (1)

exploitdb WORKING POC VERIFIED
by Aung Khant · textwebappsphp
https://www.exploit-db.com/exploits/36076

This is a functional proof-of-concept for a stored XSS vulnerability in Concrete CMS 5.4.1.1. The exploit leverages unsanitized input in the 'rcID' parameter to inject malicious JavaScript, which executes in the context of the affected site.

Classification
Working Poc 95%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Concrete CMS 5.4.1.1
No auth needed
Prerequisites: Access to the login page of the target Concrete CMS instance
MITRE ATT&CK
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026