CVE-2025-41056
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 · uneditedA vulnerability has been discovered in appRain CMF version 4.0.5, consisting of a stored authenticated XSS due to a lack of proper validation of user input, through the 'data[Addon][layouts]' and 'data[Addon][layouts_except]' parameters in /apprain/developer/addons/update/hysontable.
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 confidenceStored authenticated XSS vulnerability in appRain CMF 4.0.5 allows authenticated attackers to inject malicious JavaScript through the 'data[Addon][layouts]' or 'data[Addon][layouts_except]' parameters at /apprain/developer/addons/update/hysontable due to insufficient input validation.
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= 4.0.5CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/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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Confirm AppRain CMF installationCheck for appRain folder structure or look for appRain identifying files in the web root. Check version by examining version files or admin panel about page.Affected if The application is appRain CMF version 4.0.5 exactly
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Verify admin authentication is enabledCheck if admin/user accounts exist in the system by querying the users table in the database or attempting to access /apprain/developer/loginAffected if Any authenticated user account exists in the system (the vulnerability requires valid credentials)
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Check the addons update endpointNavigate to /apprain/developer/addons/update/hysontable while authenticated and inspect the form parameters for data[Addon][layouts] and data[Addon][layouts_except]Affected if The hysontable add-on update page loads and contains the vulnerable parameters
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Inspect stored addon configuration dataQuery the database for records in the addon settings table, specifically looking at layout-related fields for any injected script tags or event handlersAffected if Malicious JavaScript payloads are stored in the layouts or layouts_except configuration fields
You are affected if you are running appRain CMF version 4.0.5, have an active authenticated user account, and the stored values in the addon layout configuration contain unsanitized script content.
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 dataImplement strict input validation and proper output encoding for the affected parameters to prevent script injection. Since this is stored XSS, sanitize data before storage and encode when rendering.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-41056 — 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-2025-41056 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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