CVE-2026-36163
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 · uneditedAn HTML injection vulnerability in the file view endpoint of LiquidFiles v4.2.7 allows authenticated attackers to execute arbitrary JavaScript in the context of the victim's browser via the uploading of and user interaction with a crafted HTML file.
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 confidenceA stored Cross-Site Scripting (XSS) vulnerability exists in LiquidFiles v4.2.7's file view endpoint. An authenticated attacker can upload a crafted HTML file containing malicious JavaScript. When other users view or interact with this file in the application, the embedded JavaScript executes in their browser context, potentially allowing session hijacking, credential theft, or actions performed on behalf of the victim.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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 LiquidFiles versionAccess the admin panel or check the application's about page for the installed version numberAffected if The installed version is 4.2.7
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Confirm HTML file upload capabilityCheck if users have permission to upload HTML files in the upload settings or user role configurationsAffected if HTML file uploads are permitted for authenticated users
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Test file view endpoint behaviorUpload a benign test HTML file containing non-malicious script tags and attempt to access it via the file view endpoint to see if the script executesAffected if The file view endpoint serves HTML content without sanitizing or stripping script tags
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Inspect Content-Security-Policy headersUse browser developer tools or a command-line tool to inspect HTTP headers on the file view endpoint for the presence of Content-Security-PolicyAffected if No Content-Security-Policy header is set, or the policy allows inline scripts (script-src 'unsafe-inline')
A user is affected if they are running LiquidFiles version 4.2.7, allow HTML file uploads, and the file view endpoint serves uploaded HTML files without sanitization or adequate CSP protection.
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 or strip HTML/script content from uploaded files when served through the file view endpoint, and implement Content-Security-Policy headers to prevent execution of inline scripts.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-36163 — 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-2026-36163 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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