CVE-2025-41035
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 problem has been discovered in appRain CMF 4.0.5. An authenticated Path Traversal vulnerability in /apprain/common/download/ allows remote users to bypass the intended SecurityManager restrictions and download any file if they have adequate permissions outside the document root configured on the server via the base64 path after /download/.
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 confidenceappRain CMF 4.0.5 contains an authenticated path traversal vulnerability in the /apprain/common/download/ endpoint. Authenticated users can supply a base64-encoded file path after /download/ to bypass SecurityManager restrictions and download arbitrary files from outside the document root, provided they have filesystem permissions to access those files.
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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 installation versionCheck the application's version file, admin panel 'About' page, or composer.json for the installed version. Common locations: /composer.json, /admin/system/about, or footer of admin pages.Affected if The installed version is exactly 4.0.5
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Verify /apprain/common/download/ endpoint existsSend a GET request to http(s)://<target>/apprain/common/download/ and observe if the endpoint responds (even with an error). Use curl or browser to test.Affected if The endpoint returns any HTTP response (200, 401, 403, or redirect) indicating it exists and is reachable
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Confirm authentication mechanism is availableAttempt to log in to the appRain admin panel or API. Check if user registration or credential setup was completed during installation.Affected if You can obtain a valid authenticated session (logged-in state) in the application
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Test path traversal via base64-encoded path parameterBase64-encode a known file path outside the web root (e.g., ../../../../etc/passwd becomes Li4vLi4vLi4vZXRjL3Bhc3N3ZA==) and append it to /apprain/common/download/. Example: /apprain/common/download/Li4vLi4vLi4vZXRjL3Bhc3N3ZA==Affected if The application returns the contents of a file outside the document root, indicating the path traversal succeeds
A user is affected if running appRain CMF version 4.0.5, the /apprain/common/download/ endpoint is accessible, and they have authenticated access that allows downloading files via base64-encoded path traversal.
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 on the base64-decoded path parameter, canonicalize paths to resolve ../ sequences, enforce allowlist-based file access, and ensure the application refuses to serve files outside the designated upload/download directory.
- 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-2025-41035 — 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-2025-41035 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
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