CVE-2026-4536
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 was found in Acrel Environmental Monitoring Cloud Platform 1.1.0. This issue affects some unknown processing. Performing a manipulation results in unrestricted upload. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
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 Acrel Environmental Monitoring Cloud Platform v1.1.0 allows remote attackers to upload arbitrary files to the server due to insufficient validation of uploaded file types and content. The existence of a public exploit increases risk as attackers can readily leverage this for remote code execution or malware deployment.
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.
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Identify the installed productCheck the application banner, headers, or login page for 'Acrel Environmental Monitoring Cloud Platform' branding and confirm the software name matches the affected product.Affected if The installed product is Acrel Environmental Monitoring Cloud Platform.
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Determine the product versionLocate the version information in the application's about page, footer, source code comments, or API endpoint responses. Compare against the affected version v1.1.0.Affected if The installed version is v1.1.0.
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Locate the file upload functionalityBrowse the application interface for file upload features such as avatar upload, document attachment, profile image upload, or similar upload endpoints. Note the URL path and parameters used.Affected if A file upload feature is present and accessible to users.
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Verify file type validation is absentAttempt to upload a non-image file (such as a .php, .jsp, or .exe file) to the identified upload endpoint. Inspect whether the server accepts the file without rejecting it based on extension or content type.Affected if The server accepts files with dangerous extensions like .php, .jsp, or .exe without validation.
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Confirm uploaded files are web-accessibleAfter uploading a test file (such as a harmless text file), attempt to access the file via a direct URL in a browser to determine if it is stored within the web root and reachable.Affected if Uploaded files are accessible via HTTP/HTTPS and stored within the web directory.
A user is affected if the installed product is Acrel Environmental Monitoring Cloud Platform version v1.1.0 and the file upload feature is accessible and accepts arbitrary file types without 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 whitelist-based file type validation, verify file content (magic bytes), store uploads outside web root with randomized filenames, and disable script execution permissions on the upload directory. Consider upgrading to a patched version if available.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-4536 — 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-2026-4536 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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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