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PatchSiren cyber security CVE debrief

CVE-2026-111603 PlayEdu CVE debrief

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. This vulnerability can lead to potential exposure of course structure and attachment files. Defenders should assess exposure and prioritize remediation. The vulnerability is caused by a missing authorization check in the CourseController endpoints, allowing authenticated students to access department-restricted courses.

Vendor
PlayEdu
Product
Unknown
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-16
Original CVE updated
2026-10-23
Advisory published
2026-10-16
Advisory updated
2026-10-23

Who should care

Defenders responsible for PlayEdu deployments, especially those with student authentication and course management, should assess exposure and prioritize remediation. Operators of PlayEdu should review and verify the authorization checks for CourseController endpoints. Security teams should track exceptions, retest remediated assets, and close the item only after evidence is documented.

Why it matters

The missing authorization vulnerability in PlayEdu through 2.3 allows authenticated students to access department-restricted courses, potentially exposing course structure and attachment files. Defenders should prioritize verifying and remediating this vulnerability in PlayEdu deployments.

  • Authenticated students may access restricted courses
  • Potential exposure of course structure and attachment files
  • Need for verification of PlayEdu version and deployment
  • Prioritization of authorization checks for CourseController endpoints

Technical summary

The vulnerability is caused by a missing authorization check in the CourseController endpoints of PlayEdu through 2.3. This allows authenticated students to access department-restricted courses by omitting the department visibility check. The vulnerability can lead to potential exposure of course structure and attachment files. Defenders should prioritize verifying and remediating this vulnerability in PlayEdu deployments, especially where student authentication and course management are critical. The CVE record and source item provide details on the missing authorization vulnerability in PlayEdu through 2.3.

Defensive priority

Defenders should prioritize verifying and remediating this vulnerability in PlayEdu deployments, especially where student authentication and course management are critical.

Recommended defensive actions

  • Verify PlayEdu version and assess exposure
  • Implement authorization checks for CourseController endpoints
  • Restrict access to department-restricted courses
  • Monitor for potential abuse of course details and attachment download endpoints
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the missing authorization vulnerability in PlayEdu through 2.3. The vulnerability allows authenticated students to access department-restricted courses.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-111603 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-111603

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-111603 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-111603

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • PlayEdu through 2.3 Missing Authorization via Student CourseController Endpoints

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/111xxx/CVE-2026-111603.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://hackmd.io/@hieuPenguinnn/playedu-course-attachment-cross-department-authz

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://github.com/PlayEdu/PlayEdu/blob/2.3/playedu-api/playedu-api/src/main/java/xyz/playedu/api/controller/frontend/CourseController.java

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/PlayEdu/PlayEdu

    Supplemental source - product

  • Source reference

    Unverified legacy reference

    URL: https://www.vulncheck.com/advisories/playedu-through-2.3-missing-authorization-via-student-coursecontroller-endpoints

    Supplemental source - third-party-advisory

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.