XclonerApplication
CVE-2020-13424
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 · uneditedThe XCloner component before 3.5.4 for Joomla! allows Authenticated Local File Disclosure.
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 · high confidenceThe XCloner Joomla! component before version 3.5.4 contains an authenticated local file disclosure vulnerability that allows authenticated users (with typically low-privilege Joomla user access) to read arbitrary files on the server filesystem via the component's backup/restore functionality, potentially exposing configuration files, credentials, or other sensitive data.
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
XclonerApplication
< 3.5.4CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 XCloner component is installedCheck for the presence of the XCloner component directory at /administrator/components/com_xcloner/ or query the Joomla #__extensions table for an extension named 'Xcloner' or 'com_xcloner'.Affected if The XCloner component exists in the Joomla installation.
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Determine installed XCloner versionOpen the manifest.xml file in the XCloner component directory (typically at /administrator/components/com_xcloner/xcloner.xml or manifest.xml) and locate the <version> tag, or query the #__extensions table for the version field.Affected if The reported version number is less than 3.5.4.
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Confirm component is accessible to authenticated usersReview the Joomla user group permissions for the XCloner component in the backend under Components > Xcloner > Configuration, or check if the component allows access to Registered or Author-level users (not just Super Users or Administrators).Affected if Low-privilege Joomla users (Registered, Author, or similar) can access the Xcloner component.
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Verify backup/restore functionality is enabledLog in as an authenticated user and navigate to the XCloner component to confirm the backup/restore feature is present and functional, or inspect the component's configuration for enable/disable flags.Affected if The backup/restore functionality is active and accessible.
The environment is affected if XCloner is installed with a version earlier than 3.5.4 and the component or its backup/restore feature is accessible to authenticated users with low privileges.
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 data3.5.4
Upgrade the XCloner component to version 3.5.4 or later. If immediate patching is not possible, restrict administrative access to trusted users only and consider disabling the component until the upgrade can be performed.
Fix this in Xcloner
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-2020-13424 — 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-2020-13424 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