CVE-2026-81339 - Vulnerability Details - OpenCVE

The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not perform a per-object ownership check when returning a quiz attempt result, allowing any authenticated user with a minimal (subscriber) role to read other students' quiz grades, pass/fail status and attempt timestamps by referencing an attempt identifier belonging to another user.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0018.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://wpscan.com/vulnerability/f027d0b1-5d8a-4e80-adb3-bbf97dc53306/

History

Wed, 23 Sep 2026 11:45:00 +0000

Type	Values Removed	Values Added
Description		The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not perform a per-object ownership check when returning a quiz attempt result, allowing any authenticated user with a minimal (subscriber) role to read other students' quiz grades, pass/fail status and attempt timestamps by referencing an attempt identifier belonging to another user.
Title		MasterStudy LMS < 3.7.50 - Subscriber+ Quiz Attempt Grade Disclosure via IDOR
Weaknesses		CWE-639
References		https://wpscan.com/vulnerability/f027d0b1-5d8a-4e80-adb3-bbf97dc53306/
Metrics		cvssV3_1 `{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: WPScan

Published: 2026-09-23T06:00:15.932Z

Updated: 2026-09-23T10:59:07.298Z

Reserved: 2026-08-26T18:07:09.452Z

Link: CVE-2026-81339

Vulnrichment

Updated: 2026-09-23T10:37:59.961Z

NVD

Status : Received

Published: 2026-09-23T06:17:02.263

Modified: 2026-09-23T11:17:11.880

Link: CVE-2026-81339

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-639

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