How severe is CVE-2024-2409?

CVE-2024-2409 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-2409 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-2409?

CVE-2024-2409 affects Stylemixthemes Masterstudy Lms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-2409?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-2409 have an EU (EUVD) identifier?

Yes. CVE-2024-2409 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-27361.

When was CVE-2024-2409 published?

CVE-2024-2409 was published on 2024-03-29 and last updated on 2026-06-17.

CVE-2024-2409

CVE-2024-2409 is a critical-severity vulnerability in Stylemixthemes Masterstudy Lms with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-266.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-27361
Weakness: CWE-266
Affected product: Stylemixthemes Masterstudy Lms
Published: 2024-03-29
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2024-2409?: 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.
How severe is CVE-2024-2409?: CVE-2024-2409 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-2409 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-2409?: CVE-2024-2409 affects Stylemixthemes Masterstudy Lms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-2409?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-2409 have an EU (EUVD) identifier?: Yes. CVE-2024-2409 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-27361.
When was CVE-2024-2409 published?: CVE-2024-2409 was published on 2024-03-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:stylemixthemes:masterstudy_lms:*:*:*:*:*:wordpress:*:*

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