CVE-2023-29406

MEDIUM

GO < 1.19.11 - Interpretation Conflict

Title source: rule
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2023-29406. PoCs published by LuizGustavoP.

AI-analyzed exploit summary This repository contains a README describing implementations of HTML servers in Go for analyzing CVE-2023-29406, but no actual exploit code is provided.

Description

The HTTP/1 client does not fully validate the contents of the Host header. A maliciously crafted Host header can inject additional headers or entire requests. With fix, the HTTP/1 client now refuses to send requests containing an invalid Request.Host or Request.URL.Host value.

Exploits (1)

nomisec WRITEUP
by LuizGustavoP · poc
https://github.com/LuizGustavoP/EP3_Redes

This repository contains a README describing implementations of HTML servers in Go for analyzing CVE-2023-29406, but no actual exploit code is provided.

Classification
Writeup 90%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: Unknown (CVE-2023-29406 related)
No auth needed
Prerequisites: None specified
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6

Scores

CVSS v3 6.5
EPSS 0.0125
EPSS Percentile 65.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-436
Status published
Products (1)
golang/go < 1.19.11
Published Jul 11, 2023
Tracked Since Feb 18, 2026