CVE-2021-46679
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 · uneditedA XSS vulnerability exist in Pandora FMS version 756 and below, that allows an attacker to perform javascript code executions via service elements.
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 confidenceA stored Cross-Site Scripting (XSS) vulnerability in Pandora FMS version 756 and below allows attackers to inject malicious JavaScript code through service elements, which is then executed when other users view the affected content.
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< 757CVSS 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
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/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 installed Pandora FMS versionAccess the Pandora FMS administration console and navigate to the 'About' or 'System Information' page, typically found under Admin > Setup or the main dashboard. Alternatively, check the version number displayed in the footer of the web interface or inspect the version file in the installation directory if you have filesystem access.Affected if The installed version is 756 or below (any version number less than 757).
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Confirm service elements feature is in useNavigate to the Service Management or Service Monitoring section within the Pandora FMS console. Look for any configured service elements such as service items, service templates, or service definitions that are actively monitoring infrastructure.Affected if Service elements are defined and visible within the console, indicating the feature is enabled and actively used.
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Inspect service element configurations for injected scriptsAccess each service element configuration and examine the fields used for defining service items, descriptions, and display labels. Review the raw configuration data stored in the database tables related to services (commonly tables prefixed with 'tservices' or 'tservice'), looking for script tags, event handlers, or javascript: URIs within text fields.Affected if Any service element configuration contains HTML script tags, javascript: protocols, or XSS payloads such as <script> tags, onerror= attributes, or similar malicious patterns in name, description, or display fields.
You are affected if your Pandora FMS installation is version 756 or below AND the service elements feature is actively used, as the XSS payload would be stored within service element configurations.
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 · scoped757
Upgrade Pandora FMS to a version beyond 756 that includes the security patch. If immediate patching is not possible, implement input validation and output encoding on service element handling routines as a compensating control.
Pandora FMS version 757 or higher
- 1. Backup your current Pandora FMS database and configuration files
- 2. Download Pandora FMS version 757 or later from the official source (pandorafms.com)
- 3. Stop the Pandora FMS services (tentacle_server, pandora_server)
- 4. Upgrade the Pandora FMS installation using the appropriate method for your deployment (standalone or OVA/ISO)
- 5. Verify the upgrade was successful by checking the version in the web interface
- 6. Test that the service elements functionality works properly after upgrade
- 7. Re-enable services and monitor for any issues
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-46679 — 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-2021-46679 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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