CVE•Published 2024-03-29•Modified 2026-04-08•1 article on news•6 live references•NVD data

CVE-2024-2409Stylemixthemes · Masterstudy_lms

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

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

EPSS percentile

Exploit Prediction Scoring System · top 52% of all CVEs

Weaknesses (CWE)

CWE-266Incorrect Privilege Assignment

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.

Timeline

Published 2024-03-29

Modified 2026-04-08

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2024-2409

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · WP plugin path

http.html:"/wp-content/plugins/masterstudy-lms/"

Matches any site loading the "masterstudy-lms" plugin — doesn't rely on Shodan's vuln tag.

Shodan · product

product:"Stylemixthemes Masterstudy Lms"

All exposed Stylemixthemes Masterstudy Lms instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Masterstudy Lms"

HTTP body or banner mentions "Masterstudy Lms" — catches deploys Shodan didn't identify as a product.