Actively exploited in the wild. This CVE is on the CISA Known Exploited Vulnerabilities list — treat remediation as urgent. Federal remediation due by 13 Jul 2026.
In the wildHigh EPSSPublic exploitRemotely reachableNo privilegesZero-click6 weeks old
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 · unedited
Joomla Extension - balbooa.com - Unauthenticated file upload in Balbooa Forms extension < 2.4.1 - The Joomla extension Balbooa Forms is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.
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 confidence
The Balbooa Forms Joomla extension versions prior to 2.4.1 contains an unauthenticated arbitrary file upload vulnerability. An attacker can upload executable files (such as PHP scripts) directly to the server without any authentication, achieving full remote code execution.
MitigationUpdate Balbooa Forms extension to version 2.4.1 or later. If immediate patching is not feasible, disable the extension or implement web server-level access controls to block the upload endpoint until the patch can be applied.
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
FormsApplication
Affected:< 2.4.1
CVSS 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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 checks
Work through these to decide whether this CVE applies to you.
Identify if Balbooa Forms extension is installed
In the Joomla administrator panel, navigate to Extensions > Manage > Manage and search for 'Balbooa Forms'. Alternatively, check the /administrator/components/ directory for balbooa_forms folder or the /components/com_baforms/ directory.
Affected if Balbooa Forms extension is present in the Joomla installation
Determine the installed version of Balbooa Forms
In Joomla admin, go to Components > Balboaa Forms > Dashboard (or similar) to view the version number. Alternatively, check the manifest XML file at /administrator/components/com_baforms/baforms.xml for the <version> tag.
Affected if The version number is lower than 2.4.1 or cannot be determined (treat as vulnerable)
Verify if file upload fields are enabled in any form
In the Balbooa Forms settings, review each published form and check if 'File Upload' field type is added and enabled. Navigate to Components > Balbooa Forms > Forms and inspect each active form configuration.
Affected if Any published form contains an enabled File Upload field and the extension version is below 2.4.1
Inspect upload directories for suspicious files
Check the default upload directory (typically /images/baforms/ or /media/com_baforms/uploads/) for any .php, .phtml, or other executable files that were not intentionally uploaded. Use file system access or FTP to list and review files.
Affected if Unexpected PHP scripts or executable files are found in the upload directories
The environment is affected if Balbooa Forms version is below 2.4.1 AND any form with file upload functionality is published and accessible without authentication.
Generated from the published advisory. Verify against your own configuration.
Check your environment
Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.
AI-assisted, checked against the advisory. Informational, not a guarantee.
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.
dbcve · scoped
Upgrade availableUpgrade to 2.4.1 or later
Fixed in2.4.1
Interim mitigation
Update Balbooa Forms extension to version 2.4.1 or later. If immediate patching is not feasible, disable the extension or implement web server-level access controls to block the upload endpoint until the patch can be applied.
Recommended fixHigh confidence
Balbooa Forms 2.4.1 or later
1. Identify the currently installed version of the Balbooa Forms extension in your Joomla admin panel under Extensions > Manage > Manage.
2. If the installed version is below 2.4.1, navigate to the official Balbooa website or your extension provider to download version 2.4.1 or later.
3. Before upgrading, create a complete backup of your Joomla site including the database and all files.
4. Install the updated Balbooa Forms version (2.4.1 or later) through Extensions > Manage > Install in the Joomla admin panel.
5. After installation, verify the new version is reported correctly in Extensions > Manage > Manage.
6. Test file upload functionality to confirm the vulnerability is remediated and the extension functions correctly.
7. Monitor for any suspicious files or unauthorized access attempts in your web server logs.
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Forms
Exploited in the wild — priority engagement
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Scan for this in your stack
Free · runs locally
dbcve dependency scanner
Check whether your project pulls in CVE-2026-56291 — 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.
Peer-ranked notes from engineers who’ve handled CVE-2026-56291 in production — separate from our analysis above.
Know something about CVE-2026-56291?
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
CVE-2026-56291 is an unauthenticated file upload vulnerability in Balbooa Forms for Joomla, achieving CVSS 9.8 with confirmed active exploitation. The root cause follows a well-documented pattern in CMS extension ecosystems: developers assumed Joomla's authentication layer protected their endpoints, but the extension exposed paths that bypassed or were never covered by that protection. The result is remote code execution via file upload with no authentication required.
This is not a novel failure mode. The same auth-assumption collapse has appeared in WordPress plugins and Joomla extensions for fifteen years—CVE-2010-4802, CVE-2013-1405, CVE-2019-6713 all follow the same trajectory. The commercial extension model compounds the problem: security is invisible to buyers, feature velocity drives revenue, and there's no open-source community pressure auditing these codebases.
If you're defending Joomla sites running Balbooa Forms: update immediately. The deployment window for commercial extensions runs weeks to months even under ideal conditions—if you haven't patched yet, assume compromise. Once an attacker achieves RCE through this vector, lateral movement is straightforward: the extension has database credentials, the CMS runs as a privileged user, and session tables become accessible for further exploitation.
The broader lesson is structural, not individual. CMS architectures should treat extension endpoints as untrusted by default, requiring explicit authentication enforcement rather than relying on developers to correctly inherit host platform protections. Until that changes, this vulnerability class will continue recurring across the ecosystem.
What this is
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.
What belongs here
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
