Welcart E CommerceWordPress extension · Welcart
CVE-2016-4827
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-2016-4826.
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 the Collne Welcart e-Commerce WordPress plugin versions prior to 1.8.3. The vulnerability allows remote unauthenticated attackers to inject malicious JavaScript or HTML code through unspecified input vectors, which then executes in the browsers of authenticated users who access the affected 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
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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Verify Welcart e-Commerce plugin is installedIn WordPress admin, navigate to Plugins > Installed Plugins and look for 'Welcart e-Commerce' or 'Collne Welcart e-Commerce' in the list. Alternatively, check the plugin directory (wp-content/plugins/) for a folder containing 'welcart' in the name.Affected if The plugin folder exists in the WordPress installation
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Check the installed plugin versionIn WordPress admin, go to Plugins > Installed Plugins and click on the Welcart e-Commerce plugin to view its version information. Compare this version number to 1.8.3.Affected if The displayed version is less than 1.8.3 (for example, 1.8.2, 1.7.0, etc.)
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Confirm the plugin is activeIn WordPress admin, verify that Welcart e-Commerce shows as 'Active' in the Plugins list. The vulnerability affects authenticated users accessing the affected functionality.Affected if The plugin is activated and running on the site
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Identify if the plugin handles external inputThe stored XSS vulnerability allows unauthenticated attackers to inject code through unspecified input vectors. Review any public-facing forms, product submission pages, or user input fields that the plugin provides.Affected if The plugin processes and stores user-submitted data that could be exploited for XSS injection
A user is affected if the Welcart e-Commerce plugin version is below 1.8.3 and the plugin is active on their WordPress site, as the stored XSS can be triggered by unauthenticated attackers injecting malicious scripts that execute when authenticated users access the affected functionality.
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
Upgrade the Collne Welcart e-Commerce plugin to version 1.8.3 or later. If immediate patching is not possible, disable the plugin or restrict access to the affected endpoints until the update can be applied.
Fix this in Welcart E Commerce
Scoped from the published advisory
- Consultation1.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,432.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-4827 — 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-2016-4827 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