9.8

CVE-2024-2409: stylemix masterstudy lms wordpress plugin – for online courses and education Incorrect Privilege Assignment

CVSS: 9.8v3.1CriticalModified
Published 29-03-2024Last modified 08-04-2026
Open JSON

Vulnerability summary

CVE-2024-2409 is a critical (CVSS 9.8) Incorrect Privilege Assignment vulnerability in stylemix masterstudy lms wordpress plugin – for online courses and education. EPSS estimates a 0.83% chance of exploitation in the next 30 days, higher than 57.1% of scored vulnerabilities. Fixed in 3.3.2.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.83%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 29-03-2024
    PublishedVulnerability first disclosed.
  2. 08-04-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.83%

Chance of exploitation in the next 30 days

Percentile

57%

Versus all other CVEs

30-day change

0.00 pp

From 0.83% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.83%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Stylemix1 product
Stylemixthemes1 product
Wordpress1 product
  • masterstudy-lms-learning-management-system≤ 3.3.1 (fixed in 3.3.2)

3 vendors · 3 products

References

4 links