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Nagios XiApplication · Nagios

CVE-2023-7313

MEDIUM · 5.4 CVSS v3.1 Published 2025-10-30
Fix available
A fix is available. Upgrade to 5.11.3 or later.
See remediation →
58/100
Remediation priority · Elevated
Remotely reachable

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Nagios XI versions prior to 5.11.3 are vulnerable to cross-site scripting (XSS) via the Bulk Modifications tool. 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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Nagios XI versions prior to 5.11.3 contain a stored cross-site scripting (XSS) vulnerability in the Bulk Modifications tool. The vulnerability stems from insufficient validation or escaping of user-supplied input, allowing an attacker to inject malicious JavaScript that executes in the context of a victim's browser when the crafted data is rendered.

MitigationUpgrade to Nagios XI version 5.11.3 or later to obtain the vendor patch. Additionally, implement proper input validation and output encoding on all user-supplied data in the Bulk Modifications tool.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Nagios XiApplication
Affected:< 5.11.3

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Verify Nagios XI is installed
    Check for the presence of Nagios XI web interface or check system packages for nagiosxi. The web interface is typically accessible at /nagiosxi or /xi on the server.
    Affected if Nagios XI is present on the system
  2. Determine the installed Nagios XI version
    Access the Nagios XI web interface and navigate to the Admin > System Information page, or run the command: cat /usr/local/nagiosxi/etc/version.ini (or check the version file in your installation directory).
    Affected if The version displayed is prior to 5.11.3
  3. Confirm access to the Bulk Modifications tool
    Log into the Nagios XI web interface and navigate to the Bulk Modifications tool (typically found under the Admin or Tools menu). Verify if this tool is accessible to your user account.
    Affected if The Bulk Modifications tool is accessible and you have permission to use it
  4. Check for existing malicious data in Bulk Modifications
    Review any existing bulk modification profiles, templates, or configuration data stored in the Nagios XI database or configuration files related to the Bulk Modifications tool. Look for unexpected script tags or encoded JavaScript in input fields.
    Affected if Stored XSS payloads exist in Bulk Modifications tool data

You are affected if you are running any version of Nagios XI prior to 5.11.3 and have access to or have used the Bulk Modifications tool.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 5.11.3 or later
Fixed in 5.11.3
Interim mitigation

Upgrade to Nagios XI version 5.11.3 or later to obtain the vendor patch. Additionally, implement proper input validation and output encoding on all user-supplied data in the Bulk Modifications tool.

Recommended fix Moderate confidence

5.11.3

  1. Log into the Nagios XI server with administrative privileges
  2. Back up the current Nagios XI configuration and database
  3. Run the system update process or download Nagios XI version 5.11.3 from the official Nagios website
  4. Install the version 5.11.3 update following the standard Nagios XI upgrade documentation
  5. After upgrading, verify the Bulk Modifications tool is functioning correctly
  6. Clear browser cache and test that the XSS vulnerability is resolved by attempting to inject script in the Bulk Modifications tool input fields

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Nagios Xi Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
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An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-7313 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data