---
id: CVE-2026-111603
title: >-
  PlayEdu through 2.3 Missing Authorization via Student CourseController
  Endpoints
summary: >-
  PlayEdu through 2.3 contains a missing authorization vulnerability in the
  CourseController that allows authenticated students to access
  department-restricted courses by omitting the department visibility check.
  Attackers can enumerate se…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-639
vendor: PlayEdu
product: PlayEdu
affected:
  - PlayEdu <= 2.3
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T17:38:45.572Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111603'
references:
  - url: >-
      https://hackmd.io/@hieuPenguinnn/playedu-course-attachment-cross-department-authz
  - url: >-
      https://github.com/PlayEdu/PlayEdu/blob/2.3/playedu-api/playedu-api/src/main/java/xyz/playedu/api/controller/frontend/CourseController.java#L57-L132
  - url: 'https://github.com/PlayEdu/PlayEdu'
  - url: >-
      https://www.vulncheck.com/advisories/playedu-through-2.3-missing-authorization-via-student-coursecontroller-endpoints
    label: >-
      VulnCheck Advisory: PlayEdu through 2.3 Missing Authorization via Student
      CourseController Endpoints
tags:
  - cve.org
ingestedAt: '2026-10-16T18:43:08.700Z'
---

## Overview

PlayEdu through 2.3 contains a missing authorization vulnerability in the CourseController that allows authenticated students to access department-restricted courses by omitting the department visibility check. Attackers can enumerate sequential course and attachment IDs via the course details and attachment download endpoints to obtain course structure and attachment files from other departments.

## Affected

- `PlayEdu <= 2.3`

## Remediation

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