Staging ExtensionWordPress extension · Mainwp
CVE-2023-23639
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 · uneditedMissing Authorization vulnerability in MainWP MainWP Staging Extension.This issue affects MainWP Staging Extension: from n/a through 4.0.3.
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 confidenceMissing authorization vulnerability in the MainWP Staging Extension allows unauthorized users to perform privileged actions they should not have access to, resulting in a high-severity (8.8) security gap affecting versions through 4.0.3.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
Staging ExtensionWordPress extension
< 4.0.4CVSS 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
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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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Verify MainWP Staging Extension is installedLog in to WordPress admin and navigate to Plugins > Installed Plugins. Look for 'MainWP Staging Extension' in the list. Alternatively, check the file system at wp-content/plugins/ for a folder named 'mainwp-staging' or similar.Affected if The extension is present and active in the WordPress installation
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Check the installed version numberIn WordPress admin, go to Plugins > Installed Plugins and locate MainWP Staging Extension. The version number is displayed below the plugin name. Alternatively, open the main plugin PHP file (usually mainwp-staging.php) and look for the 'Version' header comment in the file metadata.Affected if The version is anything less than 4.0.4 (for example, 4.0.3, 4.0.2, etc.)
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Confirm staging functionality is accessibleCheck if the staging feature is accessible via the MainWP dashboard or if the staging REST API endpoints are exposed. Look for staging-related menu items or pages in the MainWP child site admin area.Affected if The staging extension is active and the staging feature can be accessed by users
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Review user access to staging operationsExamine which user roles have access to staging features in the MainWP settings. Check if lower-privileged users (such as Editors or Authors) can trigger staging-related actions.Affected if Users without Administrator role can access or trigger staging operations
If MainWP Staging Extension is installed with a version lower than 4.0.4 and the staging feature is active and accessible, the environment is affected by this authorization bypass vulnerability.
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.
dbcve · scoped4.0.4
Apply the vendor patch/update to MainWP Staging Extension 4.0.4 or later which includes proper authorization checks for sensitive staging operations.
MainWP Staging Extension version 4.0.4
- Backup your WordPress site and database before making any updates
- Navigate to the WordPress admin dashboard
- Go to Plugins > Installed Plugins
- Locate the MainWP Staging Extension
- If an update is available, click 'Update Now' to install version 4.0.4 or later
- Alternatively, navigate to MainWP > Extensions and check for available updates
- Verify the installed version is 4.0.4 or higher after updating
- Test that staging functionality works correctly after the update
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Staging Extension
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 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 $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-23639 — 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-2023-23639 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
- No spam, self-promotion, credentials, or personal data