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Essential BlocksWordPress extension · Wpdeveloper

CVE-2023-47760

HIGH · 8.8 CVSS v3.1 Published 2024-12-09
Fix available
A fix is available. Upgrade to 4.2.1 or later.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click

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 · unedited
Missing Authorization vulnerability in WPDeveloper Essential Blocks for Gutenberg essential-blocks allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Essential Blocks for Gutenberg: from n/a through <= 4.2.0.

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 confidence

A Missing Authorization vulnerability in the Essential Blocks for Gutenberg WordPress plugin allows attackers to exploit incorrectly configured access control security levels. This broken access control issue enables unauthenticated or unauthorized users to perform actions they should not have permission to access.

MitigationUpdate Essential Blocks for Gutenberg to a version beyond 4.2.0 when a patched release becomes available. Until then, restrict plugin access through server-side configuration and monitor for suspicious administrative activity.

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
Essential BlocksWordPress extension
Affected:< 4.2.1

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
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 checks

Work through these to decide whether this CVE applies to you.

  1. Locate the Essential Blocks plugin installation
    Access your WordPress admin dashboard and navigate to Plugins > Installed Plugins. Look for 'Essential Blocks for Gutenberg' or 'Essential Blocks' in the plugin list. Alternatively, check your wp-content/plugins/ directory for a folder named 'essential-blocks'.
    Affected if The plugin is present in the installation
  2. Identify the installed version number
    In the WordPress admin under Plugins > Installed Plugins, find the Essential Blocks entry and locate the version number displayed beneath the plugin name. If using WP-CLI, run: wp plugin list --name='essential-blocks' --format=table
    Affected if A version number is displayed
  3. Compare your version against the affected range
    Compare the installed version you found to the affected range: anything below 4.2.1 is vulnerable. For example, versions 4.2.0, 4.1.0, 4.0.0, or any alpha/beta/RC release before 4.2.1 are within the affected range.
    Affected if The installed version is less than 4.2.1 (e.g., 4.2.0, 4.1.9, etc.)
  4. Verify the plugin is active
    In WordPress admin under Plugins > Installed Plugins, confirm the Essential Blocks plugin shows as 'Active'. Alternatively, via WP-CLI: wp plugin list --name='essential-blocks' --status=active --format=table
    Affected if The plugin is currently active and version is below 4.2.1

You are affected if Essential Blocks for Gutenberg is installed, active, and running at a version lower than 4.2.1, as this enables the broken access control vulnerability to be exploited.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 4.2.1 or later
Fixed in 4.2.1
Interim mitigation

Update Essential Blocks for Gutenberg to a version beyond 4.2.0 when a patched release becomes available. Until then, restrict plugin access through server-side configuration and monitor for suspicious administrative activity.

Recommended fix High confidence

Essential Blocks for Gutenberg version 4.2.1

  1. 1. Backup your WordPress site before making any changes.
  2. 2. Navigate to Plugins > Installed Plugins in your WordPress admin dashboard.
  3. 3. Locate 'Essential Blocks for Gutenberg' in the plugin list.
  4. 4. If an update is available, click 'Update Now' to upgrade to version 4.2.1.
  5. 5. Alternatively, you can manually download version 4.2.1 from the WordPress plugin repository and upload it via Plugins > Add New > Upload Plugin.
  6. 6. After updating, verify the plugin version shows 4.2.1.
  7. 7. Test that your Gutenberg blocks function normally after the update.

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Essential Blocks Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,040
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,664.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-47760 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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