CVE-2026-39468
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 · uneditedContributor Arbitrary File Deletion in Meta Box – WordPress Custom Fields Framework <= 5.11.1 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 · high confidenceThe Meta Box WordPress plugin versions 5.11.1 and earlier contain an arbitrary file deletion vulnerability allowing users with Contributor-level permissions to delete files on the server via insufficient access control checks on file deletion functions.
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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/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 Meta Box plugin versionLog into WordPress admin and navigate to Plugins > Installed Plugins. Locate the Meta Box plugin and read the version number displayed below the plugin name. Alternatively, check the file wp-content/plugins/meta-box/meta-box.php and look for the 'Version' header in the plugin comments.Affected if The displayed version is 5.11.1 or earlier.
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Verify WordPress user roles existNavigate to Users > All Users in the WordPress admin panel. Confirm that users with the Contributor role exist on the site.Affected if At least one Contributor-level user account exists on the WordPress site.
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Confirm file deletion features are activeReview the Meta Box plugin settings and verify that any file upload or media management features are enabled. Check if custom post types or fields using file/image upload are in use on the site.Affected if File upload fields or media management features provided by Meta Box are actively configured on the site.
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Inspect server access logs for file deletion requestsExamine web server access logs (typically found in /var/log/apache2/, /var/log/nginx/, or your hosting control panel) for POST requests to meta-box-related endpoints that include delete or remove actions, particularly from Contributor-level users.Affected if Logs show file deletion requests originating from Contributor-level user accounts to Meta Box endpoints.
The environment is affected if Meta Box plugin version is 5.11.1 or earlier, Contributor users exist, and file upload features are enabled, making the arbitrary file deletion vulnerability exploitable.
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 dataUpdate Meta Box plugin to version 5.11.2 or later which includes proper authorization checks for file deletion operations.
- Consultation2.0 h
- Implementation1.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,936.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39468 — 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-2026-39468 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