CVE-2019-25471
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 · uneditedFileThingie 2.5.7 contains an arbitrary file upload vulnerability that allows attackers to upload malicious files by sending ZIP archives through the ft2.php endpoint. Attackers can upload ZIP files containing PHP shells, use the unzip functionality to extract them into accessible directories, and execute arbitrary commands through the extracted PHP files.
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 confidenceFileThingie 2.5.7 has an arbitrary file upload vulnerability in the ft2.php endpoint that allows unauthenticated attackers to upload ZIP archives containing malicious PHP files. The application unpacks these archives into accessible web directories without proper validation, enabling remote code execution.
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<= 2.5.7CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Confirm File Thingie installationLocate ft2.php in the web root or check for files containing 'File Thingie' branding in the application directory structureAffected if ft2.php exists and responds to HTTP requests
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Identify installed versionOpen ft2.php in a text editor and search for version strings (e.g., '2.5.7', '$version') in the source code, or check for a changelog or readme fileAffected if The version is 2.5.7 or lower (or no version is displayed, suggesting an older unpatched release)
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Verify unzip functionality is presentCheck the ft2.php source code for unzip-related functions (such as 'unzip', 'ZipArchive', or 'extract') and confirm the upload form accepts ZIP file typesAffected if Unzip code is present and ZIP upload functionality is enabled in the application
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Check PHP execution in upload directoriesExamine the web server configuration (Apache .htaccess, Nginx config) and upload directory for PHP execution permissions; look for 'SetHandler' or 'php_flag' directives that restrict PHP executionAffected if PHP execution is allowed in the directories where uploads are stored (typically a 'files' or 'uploads' subdirectory)
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Confirm authentication statusReview ft2.php for session validation, login checks, or authentication includes at the beginning of the script; attempt to access ft2.php without credentialsAffected if No authentication check is performed before allowing file uploads, or authentication can be bypassed
A user is affected if File Thingie version 2.5.7 or lower is installed, the ft2.php upload endpoint is accessible, and PHP execution is permitted in the upload directory.
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 dataDisable PHP execution in upload directories, implement strict file type and content validation before extraction, restrict extraction paths to prevent directory traversal, and consider disabling the unzip functionality or adding authentication.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-25471 — 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-2019-25471 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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