CVE-2026-88848Network attack vectorHinoki check available

Subscriber enrollment bypass via unchecked membership plan

Published Sep 25, 2026 · Updated Sep 25, 2026

Missing authorization in StylemixThemes MasterStudy LMS 1.9 through 3.7.49 allows remote authenticated users to enroll in restricted courses. The membership enrollment handler trusts a submitted plan identifier without confirming that the member owns it or that the requested course and quota belong to that plan. Subscriber-level membership access is sufficient to obtain paid course access outside the account's category and course-count entitlements.

CVSS severityUnavailable
Unscored
EPSS probability0.12%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authorization in StylemixThemes MasterStudy LMS 1.9 through 3.7.49 allows remote authenticated users to enroll in restricted courses. The membership enrollment handler trusts a submitted plan identifier without confirming that the member owns it or that the requested course and quota belong to that plan. Subscriber-level membership access is sufficient to obtain paid course access outside the account's category and course-count entitlements.

The record

CVE
CVE-2026-88848
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
StylemixThemes
Product
MasterStudy LMS
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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=1.9 <3.7.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

StylemixThemes · MasterStudy LMSversion=1.9 <3.7.50

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

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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