CVE-2018-0536
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 · uneditedCross-site scripting vulnerability in QQQ SYSTEMS ver2.24 allows an attacker to inject arbitrary web script or HTML via quiz.cgi.
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 confidenceReflected cross-site scripting vulnerability in quiz.cgi of QQQ SYSTEMS ver2.24 allows unauthenticated attackers to inject arbitrary JavaScript or HTML via unsanitized user input in the quiz functionality.
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= 2.24CVSS 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:3.0/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 QQQ SYSTEMS installationLocate the QQQ SYSTEMS application on your server. Identify the installation directory and locate the quiz.cgi script file.Affected if The quiz.cgi script is present in the application directory.
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Check installed versionInspect the application version metadata, such as a version file, header comments in quiz.cgi, or the main application files. Compare the version number to 2.24.Affected if The installed version is exactly 2.24.
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Verify quiz functionality is accessibleConfirm that quiz.cgi is accessible via HTTP/HTTPS request or locally executable. Check if the quiz feature is enabled in the application configuration.Affected if The quiz functionality is enabled and quiz.cgi can be accessed.
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Test for unsanitized input reflectionSubmit a test payload containing a benign HTML/JavaScript string (such as <script>alert(1)</script>) via quiz input parameters in quiz.cgi and observe if the payload is reflected unescaped in the response.Affected if The submitted input is reflected in the response without HTML encoding or sanitization.
Your environment is affected if QQQ SYSTEMS version 2.24 is installed, quiz.cgi is accessible, and user input in the quiz functionality is reflected without sanitization in the response.
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 proper input validation and context-aware output encoding for all user-supplied data rendered by quiz.cgi. Alternatively, deploy a WAF rule to filter malicious XSS payloads.
- Consultation4.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2018-0536 — 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-2018-0536 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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