CVE-2025-52758
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 · uneditedUnrestricted Upload of File with Dangerous Type vulnerability in Gesundheit Bewegt GmbH Zippy zippy allows Using Malicious Files.This issue affects Zippy: from n/a through <= 1.7.0.
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 confidenceThis is an unrestricted file upload vulnerability in Zippy (version <= 1.7.0) that allows attackers to upload malicious files to the server. The lack of proper file type validation enables upload of dangerous file types (e.g., executable scripts) which could lead to remote code execution if the uploaded files are accessible and executed by the web server.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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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Identify Zippy installation and versionSearch for the Zippy application or library in your environment. Check package managers, application directories, or dependency files (e.g., composer.json, package.json) for 'zippy' or 'zippy.php'. Run 'composer show zippy/zippy' or check your lock file to retrieve the installed version.Affected if Zippy version is 1.7.0 or lower, or version cannot be determined (indicating an unpatched installation).
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Locate file upload functionalitySearch your codebase for Zippy's Archive/ArchiveBuilder classes or upload-related methods. Look for forms or API endpoints that use Zippy to handle file uploads. Check configuration files for any upload-related settings.Affected if The application uses Zippy to process or extract uploaded archive files (zip, tar, etc.) and this functionality is accessible to users.
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Inspect upload directory placementExamine where uploaded files are stored. Check application configuration, upload handlers, or file storage logic to determine the upload destination path.Affected if Uploaded files are stored within the web server's document root (htdocs, public_html) or a directory accessible via HTTP, making them reachable by attackers.
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Verify file type validation configurationReview the code that handles file uploads using Zippy. Look for MIME type checks, file extension validation, magic byte verification, or content validation before processing archives.Affected if No file type validation, extension filtering, or content inspection is performed on uploaded archives before extraction or processing.
You are affected if Zippy version 1.7.0 or lower is installed and the application uses Zippy to handle user-supplied file uploads without proper validation, with uploaded files stored in a web-accessible location.
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 allowlist-based file validation (checking MIME type, file extension, and magic bytes), store uploads outside the web root with no execution permissions, and rename files upon upload to prevent extension-based execution attacks.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,480.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-52758 — 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-2025-52758 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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