---
id: CVE-2026-78284
title: Unauthenticated Arbitrary File Deletion in MasterStudy LMS <= 3.7.42 versions.
summary: Unauthenticated Arbitrary File Deletion in MasterStudy LMS <= 3.7.42 versions.
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'
cwe:
  - CWE-22
published: '2026-08-24'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T15:10:00.207'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78284'
references:
  - url: >-
      https://patchstack.com/database/wordpress/plugin/masterstudy-lms-learning-management-system/vulnerability/wordpress-masterstudy-lms-plugin-3-7-42-arbitrary-file-deletion-vulnerability?_s_id=cve
    label: audit@patchstack.com
tags:
  - nvd
epss: 0.00533
epssPercentile: 0.43382
ingestedAt: '2026-10-12T15:55:08.140Z'
---

## Overview

Unauthenticated Arbitrary File Deletion in MasterStudy LMS <= 3.7.42 versions.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.