CVE-2024-5973Public exploitNetwork attack vector

Unauthenticated instructor access via unchecked registration role

Published Jul 22, 2024 · Updated Aug 27, 2025

Privilege escalation in StylemixThemes MasterStudy LMS before 3.3.24 allows remote attackers to create accounts with Instructor access. The stm_lms_register AJAX endpoint accepts the become_instructor flag during unauthenticated registration without enforcing role restrictions. A course page must expose a valid registration nonce, after which the new account gains instructor-only course-management functions.

CVSS severity8.8
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in StylemixThemes MasterStudy LMS before 3.3.24 allows remote attackers to create accounts with Instructor access. The stm_lms_register AJAX endpoint accepts the become_instructor flag during unauthenticated registration without enforcing role restrictions. A course page must expose a valid registration nonce, after which the new account gains instructor-only course-management functions.

The record

CVE
CVE-2024-5973
Published
Jul 22, 2024
Updated
Aug 27, 2025
Vendor
StylemixThemes
Product
MasterStudy LMS
Classifications
CWE-639, T1136
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.3.24

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

StylemixThemes · MasterStudy LMSversion=0 <3.3.24

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1136Create Account

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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