EIP-2026-103204

PRE-CVE

Proxmox VE 3/4 - Insecure Hostname Checking Remote Command Execution

Title source: legacy

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103204. PoCs published by Sysdream.

AI-analyzed exploit summary This exploit leverages a CRLF injection vulnerability in Proxmox VE 3/4 to overwrite configuration files via the 'hostname' POST parameter, enabling remote root access through reverse shell execution or privilege escalation via LXC hooks.

Description

Proxmox VE 3/4 - Insecure Hostname Checking Remote Command Execution

Exploits (1)

exploitdb WORKING POC

by Sysdream · textremotelinux

https://www.exploit-db.com/exploits/39499

View Code ZIP pw:eip

This exploit leverages a CRLF injection vulnerability in Proxmox VE 3/4 to overwrite configuration files via the 'hostname' POST parameter, enabling remote root access through reverse shell execution or privilege escalation via LXC hooks.

Classification

Working Poc 100%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: Proxmox VE 3 (OpenVZ) and Proxmox VE 4 beta 1 (LXC)

Auth required

Prerequisites: Authenticated access to Proxmox VE API · Valid VMID and template · Network connectivity for reverse shell

MITRE ATT&CK

T1189 - Drive-by Compromise T1059 - Command and Scripting Interpreter

devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve

Tracked Since Feb 18, 2026