Joomla\!Application · Joomla
CVE-2020-8419
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 issue was discovered in Joomla! before 3.9.15. Missing token checks in the batch actions of various components cause CSRF vulnerabilities.
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 confidenceA CSRF vulnerability in Joomla! before 3.9.15 allows attackers to exploit missing token validation in batch action functions across multiple components. Authenticated administrators can be tricked into executing unintended batch operations (such as delete, publish, or move actions) via malicious requests, as the application fails to verify the origin of batch action requests.
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
Joomla\!Application
>= 3.0.0, < 3.9.15CVSS 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
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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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Identify Joomla! installation versionCheck the version.php file in /libraries/cms/version/ or access the administrator dashboard and look at the 'System' > 'System Information' menu for the installed version numberAffected if The installed version is 3.0.0 or higher but lower than 3.9.15
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Locate the Joomla! version file via command lineIf you have shell access, run: grep -r 'public $RELEASE' /path/to/joomla/libraries/cms/version/ or examine the configuration.php file for version informationAffected if The version returned is between 3.0.0 and 3.9.14 inclusive
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Verify batch action functionality is accessibleLog into the Joomla! administrator panel and navigate to any component with batch operations (such as Articles, Categories, or Users management). Locate the batch action toolbar buttonsAffected if Batch action buttons are present and the site is running a vulnerable Joomla! version
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Confirm administrator account access existsCheck if any administrator-level accounts exist in the #__users table with group ID 7 or 8, or verify via the administrator panel under 'Users' > 'Manage'Affected if Administrator accounts exist and the Joomla! version is vulnerable to CVE-2020-8419
You are affected if your Joomla! installation version is 3.0.0 through 3.9.14 and you have administrator accounts with access to components that support batch operations.
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 data3.9.15
Upgrade to Joomla! version 3.9.15 or later, which includes proper CSRF token validation for batch actions. Until then, carefully review and restrict administrative access to prevent exposure to social engineering attacks.
Fix this in Joomla\!
Scoped from the published advisory
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-8419 — 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-2020-8419 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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