CVE-2024-14006Network attack vector

Link poisoning via unvalidated Host header

Published Oct 30, 2025 · Updated Oct 30, 2025

Host header injection in Nagios XI before 2024R1.2.2 allows remote attackers to poison generated links and responses through HTTP requests. The URL-construction logic accepts the untrusted HTTP Host header as an authoritative origin when producing absolute URLs, without sufficient validation. No authentication is required; poisoned links or responses can support credential phishing, account-recovery link hijacking, or web-cache poisoning.

CVSS severity8.8
High
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Host header injection in Nagios XI before 2024R1.2.2 allows remote attackers to poison generated links and responses through HTTP requests. The URL-construction logic accepts the untrusted HTTP Host header as an authoritative origin when producing absolute URLs, without sufficient validation. No authentication is required; poisoned links or responses can support credential phishing, account-recovery link hijacking, or web-cache poisoning.

The record

CVE
CVE-2024-14006
Published
Oct 30, 2025
Updated
Oct 30, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-346, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-346Origin Validation Error
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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