CVE-2020-6586
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 2.1.3 allows XSS by visiting /profile and entering a crafted name field that is mishandled on the /admin/users page. Any malicious user with limited access can store an XSS payload in his Name. When any admin views this, the XSS is triggered.
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 · high confidenceNagios Log Server 2.1.3 contains a stored cross-site scripting (XSS) vulnerability where authenticated users can inject malicious JavaScript into their profile Name field. This payload executes when administrators view the user list at /admin/users, allowing privilege escalation via session hijacking or credential theft.
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= 2.1.3CVSS 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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Verify Nagios Log Server versionCheck the installed version of Nagios Log Server. This can typically be found in the web interface footer, or by checking the package/system information (e.g., rpm -q nagios-log-server, dpkg -l nagios-log-server, or the /usr/local/nagios/logserver/etc/version file if it exists).Affected if The installed version is Nagios Log Server 2.1.3 exactly
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Confirm user accounts existAccess the Nagios Log Server administration interface and navigate to the user management section, or query the database/backend for existing user accounts. This vulnerability affects the profile Name field of user accounts.Affected if There is at least one user account configured in the system with a profile Name field that can be edited
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Verify admin user list endpoint is accessibleCheck if the /admin/users endpoint exists and is accessible to administrators in the Nagios Log Server web interface. This is the page where the XSS payload executes when administrators view the user list.Affected if The /admin/users endpoint is reachable by administrative users in the deployment
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Check profile Name field edit capabilityExamine whether regular authenticated users have the ability to edit their own profile settings, specifically the Name field. This is where the malicious JavaScript payload would be injected.Affected if Authenticated users can modify their own profile Name field and that field is not sanitized before display on the /admin/users page
You are affected if running Nagios Log Server version 2.1.3 with user accounts that can modify their profile Name field, and administrators can access the /admin/users page where the stored XSS would execute.
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.
From vendor dataImplement strict input validation on the profile Name field and apply proper output encoding when rendering user names on the /admin/users page to neutralize script injection attempts.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-6586 — 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-2020-6586 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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- Version or environment caveats, and links to real fixes
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