CVE-2026-39589
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 · uneditedSubscriber Arbitrary File Upload in Webenvo <= 0.0.6 versions.
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 confidenceWebenvo versions 0.0.6 and below contain an arbitrary file upload vulnerability allowing authenticated Subscriber-level users to upload files of their choosing to the server, likely due to missing or inadequate file type validation and access control checks on the upload functionality.
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
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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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Confirm Webenvo installation and versionLocate the Webenvo application on your server and identify its version number. Check version files, admin panels, or the application footer/banner for the installed version string.Affected if The installed version is 0.0.6 or any version lower than 0.0.6.
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Verify subscriber role is enabledCheck your user management system or database to determine if subscriber-level user accounts exist and can access the platform.Affected if Subscriber accounts are active and permitted to access the application.
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Test subscriber file upload capabilityLog in using a subscriber-level account and attempt to access the file upload functionality. Identify whether an upload form or endpoint exists that accepts file submissions from this role.Affected if Subscriber users have access to a file upload feature or endpoint.
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Inspect file type validation settingsReview the server-side code, configuration files, or upload handler settings to determine if file type validation is implemented. Check for allowlists that restrict permitted extensions.Affected if No server-side file type validation exists, or the validation permits dangerous file types (such as .php, .exe, .js, .phtml) without restriction.
Your environment is affected if Webenvo version 0.0.6 or lower is installed, subscriber accounts exist with access to file upload functionality, and no strict server-side file type validation is configured.
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 dataUpgrade Webenvo to a version newer than 0.0.6. If no update is available, disable file upload functionality for Subscriber accounts or implement strict allowlist-based file validation with proper access controls.
- Consultation2.0 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 $3,664.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39589 — 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-2026-39589 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