CVE-2026-28145Network attack vector

Unauthenticated LMS user-state manipulation

Published Jul 31, 2026 · Updated Jul 31, 2026

Missing authorization in StylemixThemes MasterStudy LMS 3.7.39 and earlier allows remote attackers to manipulate LMS user state. The CNA and Patchstack do not disclose the affected endpoint, handler, state field, or request operation that fails authenticity verification. No WordPress account or user interaction is required; the documented impact is limited to unauthorized state changes, with no disclosed data exposure or service interruption.

CVSS severity5.3
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in StylemixThemes MasterStudy LMS 3.7.39 and earlier allows remote attackers to manipulate LMS user state. The CNA and Patchstack do not disclose the affected endpoint, handler, state field, or request operation that fails authenticity verification. No WordPress account or user interaction is required; the documented impact is limited to unauthorized state changes, with no disclosed data exposure or service interruption.

The record

CVE
CVE-2026-28145
Published
Jul 31, 2026
Updated
Jul 31, 2026
Vendor
StylemixThemes
Product
MasterStudy LMS
Classifications
CWE-345
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 31, 2026Record 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=n/a <=3.7.39 changes=[{"at":"3.7.40","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

StylemixThemes · MasterStudy LMSversion=n/a <=3.7.39 changes=[{"at":"3.7.40","status":"unaffected"}]

Published CVSS scores

5.3GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-345Insufficient Verification of Data Authenticity

Public exploit references

No public exploit references are available in this record.

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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