HOMEVULNERABILITIESCVE-2024-2409
CRITICAL

CVE-2024-2409

CWE-266Published: March 29, 2024· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

The MasterStudy LMS plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.3.1. This is due to insufficient validation checks within the _register_user() function called by the 'wp_ajax_nopriv_stm_lms_register' AJAX action. This makes it possible for unauthenticated attackers to register a user with administrator-level privileges when MasterStudy LMS Pro is installed and the LMS Forms Editor add-on is enabled.

NVD Source

Technical Analysis

CVE-2024-2409 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

stylemixthemes1 product(s)
masterstudy lms
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://docs.stylemixthemes.com/masterstudy-lms/changelog-free-version#id-3.3.2
PATCHhttps://plugins.trac.wordpress.org/changeset/3059676/masterstudy-lms-learning-management-system
PATCHhttps://docs.stylemixthemes.com/masterstudy-lms/changelog-free-version#id-3.3.2
PATCHhttps://plugins.trac.wordpress.org/changeset/3059676/masterstudy-lms-learning-management-system
ADVISORYhttps://www.wordfence.com/threat-intel/vulnerabilities/id/94736152-b365-4b3a-a786-ed49f7d0fc7a?source=cve
ADVISORYhttps://www.wordfence.com/threat-intel/vulnerabilities/id/94736152-b365-4b3a-a786-ed49f7d0fc7a?source=cve

All References (6)

→
https://docs.stylemixthemes.com/masterstudy-lms/changelog-free-version#id-3.3.2Patch · Release Notes
→
https://plugins.trac.wordpress.org/changeset/3059676/masterstudy-lms-learning-management-systemPatch
→
https://www.wordfence.com/threat-intel/vulnerabilities/id/94736152-b365-4b3a-a786-ed49f7d0fc7a?source=cveThird Party Advisory
→
https://docs.stylemixthemes.com/masterstudy-lms/changelog-free-version#id-3.3.2Patch · Release Notes
→
https://plugins.trac.wordpress.org/changeset/3059676/masterstudy-lms-learning-management-systemPatch
→
https://www.wordfence.com/threat-intel/vulnerabilities/id/94736152-b365-4b3a-a786-ed49f7d0fc7a?source=cveThird Party Advisory

Quick Facts

CVE IDCVE-2024-2409
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-266
CISA KEVNo
Affected1 vendor(s)
PublishedMar 29, 2024

Related CVEs (CWE-266)

CVE-2024-9478
10.0
CVE-2024-9479
10.0
CVE-2025-54049
9.9
CVE-2026-42368
9.9
CVE-2026-32922
9.9
CVE-2019-10940
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2024-2409 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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