CVE-2026-42762
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 · uneditedImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in e4jvikwp VikBooking Hotel Booking Engine & PMS vikbooking allows DOM-Based XSS.This issue affects VikBooking Hotel Booking Engine & PMS: from n/a through <= 1.8.9.
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 confidenceDOM-based Cross-site Scripting (XSS) vulnerability in VikBooking Hotel Booking Engine & PMS allows attackers to inject malicious scripts through unsanitized user input that gets dynamically rendered in the browser's DOM without proper output encoding.
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
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
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 VikBooking installationLocate the VikBooking component in your Joomla extension manager or check for the /components/com_vikbooking/ directory on your web serverAffected if VikBooking Hotel Booking Engine & PMS is not installed on your system
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Identify installed versionAccess the Joomla administrator panel, navigate to Components > VikBooking, or inspect the manifest file at /administrator/components/com_vikbooking/vikbooking.xml for the version numberAffected if The installed version is unknown or falls within the affected range for this CVE
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Check for URL parameter handlingReview JavaScript files in the /components/com_vikbooking/ directory for code that reads URL parameters (e.g., location.search, window.location.href) and manipulates the DOM with that dataAffected if The application processes URL parameters and renders them directly into HTML without encoding
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Identify DOM manipulation pointsInspect JavaScript code that uses innerHTML, document.write, or similar methods to render user-controlled data onto the pageAffected if User input is dynamically inserted into the DOM using unsafe methods without output encoding
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Audit input fields and reflected dataTest form inputs and URL parameters in the booking flow (search forms, booking forms, customer details) to see if submitted data is reflected back in the page source without sanitizationAffected if Input submitted through booking forms or search parameters appears in the page output unencoded
Your environment is affected if VikBooking Hotel Booking Engine & PMS is installed and the application processes user input through URL parameters or form fields that get rendered into the DOM without proper output encoding.
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 output encoding and input validation in JavaScript code that handles URL parameters or DOM manipulation to neutralize script execution vectors.
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-42762 — 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-2026-42762 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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