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VulnerabilityPublished Updated

CVE-2024-14000: Nagios XI · XSS or 'Cross-site Scripting'

Affects Nagios XISource CVE Database V5

0

Not known to be exploited · CVSS 5.1 Medium : upgrade to 2024R1.1.3 when convenient.

Data as of 26 Oct 2026, 09:15 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2024R1.1.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade Nagios XI to 2024R1.1.3.

Affected software

ProductAffectedFixed in
NagiosXIAffected
  • <2024R1.1.3
Fixed in
  • 2024R1.1.3

AI-suggested

  1. Immediately upgrade Nagios XI installations to version 2024R1.1.3 or later once available to ensure the vulnerability is patched.
  2. Until patching is possible, restrict access to the Capacity Planning Report component using network segmentation, firewall rules, or Nagios XI’s internal access controls to limit exposure.
  3. Implement strict input validation and output encoding on any custom or third-party plugins or components interacting with user input to prevent injection of malicious scripts.
  4. Educate users about the risks of clicking unknown or suspicious links related to Nagios XI reports to reduce the likelihood of successful social engineering.
  5. Monitor web server and application logs for unusual requests or payloads targeting the Capacity Planning Report URLs.
  6. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts within the Nagios XI web interface.
  7. Regularly review and update Nagios XI and all associated components as part of a robust patch management program.
  8. Conduct security assessments and penetration tests focusing on web interface vulnerabilities to detect similar issues proactively.

Description

Nagios XI versions prior to 2024R1.1.3 are vulnerable to cross-site scripting (XSS) via the Capacity Planning Report component. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.

References

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