---
id: CVE-2024-14006
title: "Nagios XI versions prior to 2024R1.2.2\_contain a host header injection vulnerability"
summary: "Nagios XI versions prior to 2024R1.2.2\_contain a host header injection vulnerability. The application trusts the user-supplied HTTP Host header when constructing absolute URLs without sufficient validation. An unauthenticated, remote att…"
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-346
vendor: nagios
product: nagios_xi
affected:
  - nagios_xi < 2024
  - nagios_xi = 2024
patched:
  - nagios_xi 2024
published: '2025-10-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T18:17:56.477'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-14006'
references:
  - url: 'https://www.nagios.com/changelog/nagios-xi/'
    label: disclosure@vulncheck.com
  - url: 'https://www.nagios.com/products/security/#nagios-xi'
    label: disclosure@vulncheck.com
  - url: 'https://www.vulncheck.com/advisories/nagios-xi-host-header-injection'
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - score-dispute
epss: 0.00475
epssPercentile: 0.38734
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2025-10-31T13:04:28.191606Z'
scores:
  nvd: 6.1
  cna: 8.8
ingestedAt: '2026-09-30T18:17:24.563Z'
---

## Overview

Nagios XI versions prior to 2024R1.2.2 contain a host header injection vulnerability. The application trusts the user-supplied HTTP Host header when constructing absolute URLs without sufficient validation. An unauthenticated, remote attacker can supply a crafted Host header to poison generated links or responses, which may facilitate phishing of credentials, account recovery link hijacking, and web cache poisoning.

## Affected

- `nagios_xi < 2024`
- `nagios_xi = 2024`

## Remediation

Upgrade past the affected range:

- `nagios_xi 2024`