CVE-2026-4817Network attack vector

Authenticated data extraction via unquoted ORDER BY

Published Apr 17, 2026 · Updated Apr 17, 2026

Time-based blind SQL injection in MasterStudy LMS 3.7.25 and earlier allows remote authenticated users to read database data via its REST API. The custom Query builder treats parenthesized order values as SQL functions and concatenates them unquoted into the ORDER BY clause after ineffective esc_sql escaping. Subscriber-level access is required; crafted order or orderby parameters expose database secrets through timing responses without reported data modification.

CVSS severity6.5
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Time-based blind SQL injection in MasterStudy LMS 3.7.25 and earlier allows remote authenticated users to read database data via its REST API. The custom Query builder treats parenthesized order values as SQL functions and concatenates them unquoted into the ORDER BY clause after ineffective esc_sql escaping. Subscriber-level access is required; crafted order or orderby parameters expose database secrets through timing responses without reported data modification.

The record

CVE
CVE-2026-4817
Published
Apr 17, 2026
Updated
Apr 17, 2026
Vendor
StylemixThemes
Product
MasterStudy LMS
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 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=0 <=3.7.25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

StylemixThemes · MasterStudy LMSversion=0 <=3.7.25

Published CVSS scores

6.5WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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