EIP-2026-106972

PRE-CVE

ExpressionEngine 1.2.1 - HTTP Response Splitting / Cross-Site Scripting

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-106972. PoCs published by MustLive.

AI-analyzed exploit summary This exploit demonstrates an HTTP response splitting and XSS vulnerability in ExpressionEngine by injecting malicious headers and script tags via the URL parameter. It leverages improper input sanitization to execute arbitrary JavaScript in the context of a victim's browser.

Description

ExpressionEngine 1.2.1 - HTTP Response Splitting / Cross-Site Scripting

Exploits (1)

exploitdb WORKING POC VERIFIED
by MustLive · textwebappsphp
https://www.exploit-db.com/exploits/30983

This exploit demonstrates an HTTP response splitting and XSS vulnerability in ExpressionEngine by injecting malicious headers and script tags via the URL parameter. It leverages improper input sanitization to execute arbitrary JavaScript in the context of a victim's browser.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: ExpressionEngine 1.2.1
No auth needed
Prerequisites: Victim interaction required to trigger the payload
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026