Welcart E CommerceWordPress extension · Welcart
CVE-2016-4826
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 (XSS) vulnerability in the Collne Welcart e-Commerce plugin before 1.8.3 for WordPress allows remote attackers to inject arbitrary web script or HTML via unspecified vectors, a different vulnerability than CVE-2016-4827.
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 confidenceCross-site scripting (XSS) vulnerability in the Collne Welcart e-Commerce WordPress plugin versions prior to 1.8.3 allows remote attackers to inject arbitrary web script or HTML through unspecified vectors. This stored XSS flaw could allow attackers to execute malicious client-side scripts in the context of affected site users.
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
Welcart E CommerceWordPress extension
< 1.8.3CVSS 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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Locate the Welcart plugin installationCheck the WordPress plugins directory at wp-content/plugins/ for a folder named 'welcart' or 'usc-e-shop'Affected if The folder exists and contains the plugin files
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Identify the installed plugin versionOpen the main plugin file (typically usc-e-shop.php or welcart.php) and look for the version comment/constant at the top of the file, or check the readme.txt file for the 'Stable tag' entryAffected if The version number found is less than 1.8.3 (for example, 1.8.2, 1.8.1, 1.7.x, etc.)
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Confirm the plugin is activeIn the WordPress admin dashboard, navigate to Plugins > Installed Plugins and verify whether the Welcart e-Commerce plugin is currently activatedAffected if The plugin shows as Active and the version is below 1.8.3
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Inspect for admin-level access to the pluginLog into the WordPress admin area and navigate to the Welcart settings pages (typically under Welcart Shop > Setup or similar)Affected if You can access the plugin admin panel and the installed version is below 1.8.3
You are affected if the Welcart e-Commerce plugin is installed, active, and the installed version is lower than 1.8.3.
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 data1.8.3
Update Collne Welcart e-Commerce plugin to version 1.8.3 or later. If immediate update is not possible, consider disabling the plugin until a patch can be applied.
Fix this in Welcart E Commerce
Scoped from the published advisory
- Consultation1.0 h
- Implementation1.0 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 $1,376.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-4826 — 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-2016-4826 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data