CVE-2022-42147
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 · uneditedkkFileView 4.0 is vulnerable to Cross Site Scripting (XSS) via controller\ Filecontroller.java.
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 confidencekkFileView 4.0 contains a Cross Site Scripting (XSS) vulnerability in the FileController.java component. The vulnerability allows attackers to inject malicious scripts through unsanitized input processed by the file controller.
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= 4.0.0CVSS 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 kkFileView versionCheck the deployed kkFileView version by reviewing the application startup logs, pom.xml configuration, or the /api/version endpoint if availableAffected if The installed version is exactly 4.0.0
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Locate FileController.javaFind the FileController.java file in the deployed application WEB-INF/classes directory or source code repositoryAffected if The FileController.java component exists in the application and is actively used for file operations
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Verify input sanitization absenceReview FileController.java source code for input validation or sanitization functions (look for methods handling request parameters, especially those processing file names or paths)Affected if No input sanitization, encoding, or validation is implemented on parameters processed by FileController.java
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Confirm file controller endpoint exposureCheck if the file controller endpoints are exposed to unauthenticated or external users through application logs or network access configurationAffected if The file controller endpoints are accessible without proper input filtering applied
A user is affected if they are running kkFileView version 4.0.0 with the FileController component accessible and without input sanitization on user-supplied parameters.
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 dataSanitize and encode all user-supplied input in FileController.java, implement output encoding appropriate to the context, and validate input against expected patterns before processing.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-42147 — 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-2022-42147 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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