CVE-2025-7438Network attack vector

Authenticated arbitrary file upload via insufficient validation

Published Jul 18, 2025 · Updated Apr 8, 2026

Arbitrary file upload in StylemixThemes MasterStudy LMS Pro 4.7.9 and earlier allows remote authenticated users to write server files. The install_and_activate_plugin function accepts uploaded plugin content without sufficient file-type validation, allowing dangerous file types to reach the WordPress host. Subscriber-level access is sufficient, but timing and environmental conditions constrain exploitation; executable content can enable code execution.

CVSS severity7.5
High
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in StylemixThemes MasterStudy LMS Pro 4.7.9 and earlier allows remote authenticated users to write server files. The install_and_activate_plugin function accepts uploaded plugin content without sufficient file-type validation, allowing dangerous file types to reach the WordPress host. Subscriber-level access is sufficient, but timing and environmental conditions constrain exploitation; executable content can enable code execution.

The record

CVE
CVE-2025-7438
Published
Jul 18, 2025
Updated
Apr 8, 2026
Vendor
StylemixThemes
Product
MasterStudy LMS Pro
Classifications
CWE-434, T1105
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=4.7.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

StylemixThemes · MasterStudy LMS Proversion=0 <=4.7.9

Published CVSS scores

7.5WordfenceCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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-434Unrestricted Upload of File with Dangerous Type
T1105Ingress Tool Transfer

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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