dbcve.org
Improper AuthenticationWeakness · CWE-287

CVE-2023-51471

HIGH · 8.2 CVSS v3.1 Published 2024-04-24
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
91/100
Remediation priority · Urgent
Remotely reachable No privileges 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
Improper Authentication vulnerability in Mestres do WP Checkout Mestres WP allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Checkout Mestres WP: from n/a through 7.1.9.7.

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

Improper authentication in the Checkout Mestres WP WordPress plugin allows authenticated users to access functionality that should be constrained by access control lists. This broken access control could enable privilege escalation or unauthorized actions within the plugin's checkout features.

MitigationUpdate the plugin to the latest patched version. If no update is available, disable or restrict access to the plugin's administrative functions and audit user roles/permissions.

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
None
Integrity
High
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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 checks

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

  1. Identify if the plugin is installed
    Navigate to WordPress admin > Plugins and look for 'Checkout Mestres WP' or 'Mestres WP Checkout' in the installed plugins list
    Affected if The plugin appears in the installed plugins list
  2. Determine the installed version
    In the Plugins list, find the 'Checkout Mestres WP' entry and note the version number displayed beneath the plugin name
    Affected if The installed version is any version prior to the patched release (verify against the plugin's changelog or security advisory)
  3. Audit WordPress user roles with plugin access
    Go to Users > All Users in the WordPress admin and review which users have roles that may include access to the plugin's administrative or checkout functions
    Affected if Any authenticated user role (subscriber, contributor, author, editor) has been granted capabilities beyond their intended scope for this plugin
  4. Check for unexpected administrative capabilities
    Use a role manager plugin or query user capabilities to identify if lower-privileged users have capabilities related to checkout processing, order management, or payment settings
    Affected if Users with roles below Administrator possess capabilities for the plugin's checkout or payment functionality
  5. Review access to plugin menu items
    Log in as a non-administrator user and attempt to access any menu items or pages related to the plugin (checkout settings, order management, payment processing)
    Affected if A non-administrator authenticated user can access plugin administrative functions without proper authorization

A user is affected if the Checkout Mestres WP plugin is installed and any authenticated user can access plugin functionality that should be restricted to administrators only.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update the plugin to the latest patched version. If no update is available, disable or restrict access to the plugin's administrative functions and audit user roles/permissions.

Recommended fix Moderate confidence

Latest version of Checkout Mestres WP plugin (version higher than 7.1.9.7)

  1. 1. Log in to the WordPress admin dashboard
  2. 2. Navigate to Plugins > Installed Plugins
  3. 3. Locate the 'Checkout Mestres WP' plugin
  4. 4. Check the current installed version (should be 7.1.9.7 or lower)
  5. 5. Navigate to Dashboard > Updates or go to Plugins > Add New > Upload
  6. 6. Update the plugin to the latest available version from the WordPress.org repository or the vendor
  7. 7. Verify the update completed successfully
  8. 8. Test the checkout functionality to ensure the site operates normally

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

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA1.0 h
10.0 hours of engineering $1,750
Get help mitigating

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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-2023-51471 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