CVE-2021-37216
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 · uneditedQSAN Storage Manager header page parameters does not filter special characters. Remote attackers can inject JavaScript without logging in and launch reflected XSS attacks to access and modify specific data.
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 confidenceQSAN Storage Manager header page parameters fail to properly filter special characters, allowing remote unauthenticated attackers to inject malicious JavaScript through reflected XSS attacks. This enables attackers to execute arbitrary scripts in the context of the victim's browser to access or modify data.
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= 3.1.5= 3.3.2CVSS 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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Confirm QSAN Storage Manager is deployedIdentify if your environment runs QSAN Storage Manager software for managing QSAN storage arrays. This is typically accessible via a web browser on port 443 or 8080.Affected if The target system is not QSAN Storage Manager, then this CVE does not apply.
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Identify the storage array modelCheck the model number of the QSAN storage array in your environment. This is usually visible in the Storage Manager web interface header, system information page, or physical unit labeling.Affected if The model is not Xn8024r or Xn8008t, then this CVE does not apply.
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Check installed firmware versionAccess the Storage Manager web interface and navigate to System Settings or System Information to view the firmware version. Alternatively, use the command line interface or system management console to retrieve the firmware version.Affected if The installed firmware version is 3.1.5 for Xn8024r or 3.3.2 for Xn8008t, then the version is affected.
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Verify web interface is accessibleAttempt to access the Storage Manager login page via HTTP/HTTPS. The vulnerability exists in header page parameters, which are processed by the web application.Affected if The web interface is not accessible or not in use, then the attack surface may be reduced.
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Inspect header page parameter handlingReview how the web application handles header page parameters by observing URL requests and responses. Look for parameters in the URL that reflect user input without proper encoding.Affected if Header page parameters reflect user input in the response without sanitization, the system is vulnerable to reflected XSS.
You are affected if you run QSAN Xn8024r with firmware 3.1.5 or Xn8008t with firmware 3.3.2 and the Storage Manager web interface is accessible with header page parameters that reflect unsanitized input.
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 and output encoding on all header page parameters, and consider deploying Content Security Policy (CSP) headers to mitigate XSS execution.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-37216 — 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-2021-37216 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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