CVE-2023-38434

HIGH

xhttp 72f812d - Double Free in close_connection via Malformed HTTP Request Method

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2023-38434. PoCs published by Halcy0nic.

AI-analyzed exploit summary This repository contains a functional exploit PoC for CVE-2023-38434, demonstrating a double free vulnerability in xHTTP's `close_connection` function. The PoC includes a Python script to trigger the vulnerability and detailed AddressSanitizer output confirming the crash.

Description

xHTTP 72f812d has a double free in close_connection in xhttp.c via a malformed HTTP request method.

Exploits (1)

nomisec WORKING POC 1 stars
by Halcy0nic · poc
https://github.com/Halcy0nic/CVE-2023-38434

This repository contains a functional exploit PoC for CVE-2023-38434, demonstrating a double free vulnerability in xHTTP's `close_connection` function. The PoC includes a Python script to trigger the vulnerability and detailed AddressSanitizer output confirming the crash.

Classification
Working Poc 100%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: xHTTP (commit 72f812d and below)
No auth needed
Prerequisites: xHTTP server compiled with AddressSanitizer · Network access to the target server
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1
Core References
Exploit, Issue Tracking, Third Party Advisory
https://github.com/cozis/xHTTP/issues/1

Scores

CVSS v3 7.5
EPSS 0.0090
EPSS Percentile 54.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-415
Status published
Products (1)
xhttp_project/xhttp
Published Jul 18, 2023
Tracked Since Feb 18, 2026