Joomla\!Application · Joomla
CVE-2019-7744
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 3.9.3. Inadequate filtering on URL fields in various core components could lead to an XSS vulnerability.
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 confidenceJoomla! before 3.9.3 contains an XSS vulnerability in URL fields across multiple core components due to inadequate input filtering. Attackers can inject malicious scripts through unsanitized URL parameters, which execute when users view affected pages.
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
>= 2.5.0, <= 3.9.2CVSS 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:3.0/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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Check the installed Joomla version numberLocate the version.php file in your Joomla installation (typically at /libraries/src/Version.php or /includes/version.php) and read the version constants, or check the footer of the Joomla administrator control panel which displays the current version.Affected if The installed version is 3.9.2 or lower, or any version between 2.5.0 and 3.9.2 inclusive.
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Identify the Joomla release branchOpen the version.php file and look for the RELEASE and DEV_LEVEL constants, or check the administrator login page source for the generator meta tag which includes the version.Affected if The release is branch 3.9.x with DEV_LEVEL 2 or lower.
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Confirm the core URL field components are presentCheck if the core components that contain URL fields are installed (com_content, com_users, com_categories, com_media, or custom components with URL fields in their forms).Affected if Any of these components are present and accessible, since the XSS affects URL input fields throughout the core.
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Verify the input filtering configurationInspect the global configuration or component-specific form XML files for URL field definitions to see if custom input filtering is applied. Check the libraries/cms/form/rule/url.php file for the filtering method in use.Affected if The URL input fields rely on default Joomla filtering without the 3.9.3 patched sanitization routines.
You are affected if your Joomla installation version is 3.9.2 or any version from 2.5.0 through 3.9.2, and your site uses any core or custom components with URL input fields.
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 dataUpgrade Joomla! to version 3.9.3 or later, which implements proper filtering and sanitization of URL field inputs.
Fix this in Joomla\!
Scoped from the published advisory
- Consultation2.0 h
- Implementation3.0 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 $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-7744 — 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-2019-7744 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
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