CVE-2025-41050
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/base_libs.
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 confidenceA stored authenticated Cross-Site Scripting (XSS) vulnerability in appRain CMF 4.0.5 allows authenticated attackers to inject malicious JavaScript through the 'data[Addon][layouts]' and 'data[Addon][layouts_except]' parameters in the /apprain/developer/addons/update/base_libs endpoint due to insufficient input validation and sanitization.
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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Identify appRain CMF versionLocate the version file or check the admin dashboard for the installed appRain version. Common paths include version.php files in the root or config directory, or the admin panel's system information page.Affected if The installed version is exactly 4.0.5
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Confirm admin access existsVerify that user accounts with access to the /apprain/developer/addons/update/base_libs endpoint exist. This is typically the developer or administrator role in the CMF.Affected if Any authenticated user has access to the developer addons section
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Review access logs for the vulnerable endpointInspect web server access logs for requests to /apprain/developer/addons/update/base_libs, specifically looking for POST requests containing the parameters 'data[Addon][layouts]' or 'data[Addon][layouts_except]'.Affected if Requests to this endpoint with the vulnerable parameters are present in logs
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Check for stored XSS in addon configurationsExamine the application's database or addon configuration files for any values in fields related to 'layouts' or 'layouts_except' that contain script tags, javascript:, or other XSS payloads.Affected if The layouts or layouts_except addon settings contain unsanitized script content
You are affected if appRain CMF version 4.0.5 is installed and the /apprain/developer/addons/update/base_libs endpoint with the vulnerable parameters is accessible to authenticated users.
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 proper input validation with context-aware output encoding on the affected parameters, and apply any available vendor security patches for appRain CMF 4.0.5.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-41050 — 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-2025-41050 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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