EIP-2026-103969

PRE-CVE

Lighttpd 1.4.16 - FastCGI Header Overflow Remote Command Execution

Title source: legacy

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103969. PoCs published by Mattias Bengtsson.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in Lighttpd with FastCGI and PHP. It crafts a malicious HTTP request with manipulated headers to trigger the overflow, allowing arbitrary file disclosure or command execution.

Description

Lighttpd 1.4.16 - FastCGI Header Overflow Remote Command Execution

Exploits (1)

exploitdb WORKING POC VERIFIED

by Mattias Bengtsson · cremotemultiple

https://www.exploit-db.com/exploits/4391

View Code ZIP pw:eip

This exploit targets a buffer overflow vulnerability in Lighttpd with FastCGI and PHP. It crafts a malicious HTTP request with manipulated headers to trigger the overflow, allowing arbitrary file disclosure or command execution.

Classification

Working Poc 95%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: Lighttpd 1.4.16 with PHP 5.2.4

No auth needed

Prerequisites: Lighttpd with FastCGI enabled · PHP installed and configured with Lighttpd

MITRE ATT&CK

T1190 - Exploit Public-Facing Application T1203 - Exploitation for Client Execution

devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve

Tracked Since Feb 18, 2026