CVE-2023-7323
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 · uneditedNagios Log Server versions prior to 2024R1 are vulnerable to cross-site scripting (XSS) via the Create User function. 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 confidenceNagios Log Server versions prior to 2024R1 contain a stored cross-site scripting (XSS) vulnerability in the Create User function. The application fails to properly validate or escape user-supplied input, allowing an attacker to inject malicious JavaScript that executes in the context of other users' browsers.
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< 2024CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Identify Nagios Log Server versionAccess the Nagios Log Server admin interface and navigate to the About or System Information page to view the installed version number. Alternatively, check the version via command line if you have server access.Affected if The installed version is earlier than 2024R1 (any version in the 2023.x series or earlier).
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Confirm Create User functionality existsLog into the Nagios Log Server web interface and navigate to the User Administration or Users section to verify the Create User function is present and accessible.Affected if The Create User function is available in the interface, indicating the vulnerable feature is exposed.
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Review existing user accounts for injected scriptsIn the User Administration section, inspect all user account names, display names, email addresses, and other user-provided fields for unusual characters or patterns that may indicate XSS payloads (such as <script> tags, javascript: URIs, or event handlers like onload/onerror).Affected if Any user account contains suspicious input that could be malicious JavaScript, indicating potential exploitation.
You are affected if your Nagios Log Server version is prior to 2024R1 and the Create User function is accessible, or if you discover user accounts containing potentially malicious script content.
Generated from the published advisory. Verify against your own configuration.
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 · scoped2024
Upgrade to Nagios Log Server 2024R1 or later to obtain the patch that properly validates and escapes user input in the Create User function.
2024R1
- 1. Back up your current Nagios Log Server configuration and data
- 2. Download the latest Nagios Log Server version 2024R1 from the official Nagios website (www.nagios.com)
- 3. Follow the official upgrade instructions for Nagios Log Server
- 4. Verify the upgrade was successful by logging into the web interface
- 5. Test the Create User function to confirm XSS vulnerability is remediated
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing8.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,472.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-7323 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-7323 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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