CVE-2025-3566
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, which was classified as critical, has been found in veal98 小牛肉 Echo 开源社区系统 4.2. This issue affects the function uploadMdPic of the file /discuss/uploadMdPic. The manipulation of the argument editormd-image-file leads to unrestricted upload. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
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 confidenceUnrestricted file upload vulnerability in the uploadMdPic function of the /discuss/uploadMdPic endpoint in veal98 Echo community system v4.2. The editormd-image-file parameter can be manipulated to upload arbitrary file types without proper validation, potentially allowing remote attackers to upload malicious files (e.g., web shells) and achieve remote code execution.
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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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.
-
Identify Echo community system versionLocate the version information in the system installation - check system configuration files, about page, or metadata files (such as version.txt, config.json, or database version records)Affected if The installed version is veal98 Echo community system v4.2 or the version cannot be determined but the uploadMdPic endpoint exists
-
Verify uploadMdPic endpoint accessibilityInspect your web server configuration or API routing to confirm the /discuss/uploadMdPic endpoint is registered and accessible (check route definitions or web.xml for servlet mappings)Affected if The endpoint is exposed and reachable without additional authentication barriers or the endpoint responds to requests
-
Confirm file upload functionality existsReview application source code or intercept HTTP requests to the uploadMdPic endpoint to identify if the editormd-image-file parameter is processed for file uploadsAffected if The parameter editormd-image-file is accepted and files are stored
-
Check uploaded file storage locationExamine the web server document root and upload directory configuration to determine if uploaded files are stored in a web-accessible path (check file save path in application configuration or code)Affected if Uploaded files are saved within the web root or in a directory accessible via HTTP/HTTPS
You are affected if you run veal98 Echo community system v4.2 with the /discuss/uploadMdPic endpoint accessible and file uploads are stored in a web-accessible location without proper file type validation.
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 file type validation (whitelist approach), verify file MIME type and extension server-side, rename uploaded files, store uploads outside web root, and enforce proper authentication/authorization on the upload endpoint.
- Consultation4.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-3566 — 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-2025-3566 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data