High 8.8Published Oct 30, 2025

CVE-2024-14006Nagios XI < 2024R1.2.2 Host Header Injection

Updated under an hour ago (Oct 27, 2026, 1:23 AM ET)

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It affects Nagios XI and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Nagios XI

Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-346
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Sep 30, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Nagios XI nagios:xi (from the name)	before 2024R1.2.2	CNA record
nagios nagios_xi nagios:nagios_xi	before 2024; 2024; 2024; 2024; 2024; 2024; 2024; 2024; and 4 more ranges	NVD

References

References

https://www.nagios.com/products/security/#nagios-xi	vendor-advisory, patch
https://www.nagios.com/changelog/nagios-xi/	release-notes, patch
https://www.vulncheck.com/advisories/nagios-xi-host-header-injection	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.