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Masterstudy LmsWordPress extension · Stylemixthemes

CVE-2024-3942

MEDIUM · 5.4 CVSS v3.1 Published 2024-05-02
Fix available
A fix is available. Upgrade to 3.3.9 or later.
See remediation →
60/100
Remediation priority · Elevated
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
The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to unauthorized access, modification, and loss of data due to a missing capability check on several functions in versions up to, and including, 3.3.8. This makes it possible for authenticated attackers, with subscriber level permissions and above, to read and modify content such as course questions, post titles, and taxonomies.

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 confidence

The MasterStudy LMS WordPress plugin versions up to 3.3.8 lacks proper capability checks on several functions, allowing authenticated users with subscriber-level permissions (the lowest WordPress role) to read and modify sensitive course content including questions, post titles, and taxonomies that should require higher privileges.

MitigationUpgrade to version 3.3.9 or later which includes proper capability validation. Until then, restrict subscriber-level account creation and audit existing user roles.

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
Masterstudy LmsWordPress extension
Affected:< 3.3.9

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
Low
Integrity
Low
Availability
None

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

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. Verify MasterStudy LMS is installed
    Navigate to WordPress admin > Plugins and confirm 'MasterStudy LMS' is listed as active, or check via wp-cli: wp plugin list --name='masterstudy-lms-learning-management-system' --status=active
    Affected if The plugin is installed and active with no version check yet performed
  2. Identify the installed version
    In WordPress admin > Plugins, find MasterStudy LMS and note the version number displayed, or run: wp plugin get masterstudy-lms-learning-management-system --field=version
    Affected if Version is 3.3.8 or lower (the affected range is < 3.3.9)
  3. Review user roles for subscriber-level accounts
    Go to WordPress admin > Users and filter by 'Subscriber' role, or use wp-cli: wp user list --role=subscriber --format=count
    Affected if Any subscriber accounts exist in the system (they should not have access to course content under normal configurations)
  4. Audit user capabilities on course-related content
    Create a test subscriber user if none exists, log in as that user, and attempt to access the course editor or view/ modify course questions, post titles, or taxonomies via the frontend or admin dashboard
    Affected if A subscriber-level user can read or modify course content they should not have access to

You are affected if MasterStudy LMS version is below 3.3.9 AND subscriber-level users exist with the ability to access or modify course content.

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 3.3.9 or later
Fixed in 3.3.9
Interim mitigation

Upgrade to version 3.3.9 or later which includes proper capability validation. Until then, restrict subscriber-level account creation and audit existing user roles.

Recommended fix High confidence

3.3.9

  1. Backup your WordPress site before making any changes
  2. Navigate to Plugins > Installed Plugins in WordPress admin
  3. Find MasterStudy LMS and click 'Update now' to upgrade to version 3.3.9 or later
  4. Alternatively, download version 3.3.9 from the WordPress plugin repository and upload manually
  5. Verify the update was successful by checking the plugin version number
  6. Test that users with subscriber-level permissions can no longer access administrative functions

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

Fix this in Masterstudy Lms 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 the upgrade done

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

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dbcve dependency scanner

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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-2024-3942 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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