CVE-2026-81340 | BDVDB-2026-376809 Detail

MasterStudy LMS WordPress Plugin

Description#

The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not perform per-object ownership or capability checks when updating orders through its REST API, allowing users with the Instructor role to modify any order on the site, granting free course enrolment, revoking other users' paid enrolments, and tampering with order notes.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact low, availability impact low. Attack vector: network.

Weaknesses#

CWE-639 Authorization Bypass Through User-Controlled Key

References#

https://wpscan.com/vulnerability/8006876f-27bb-483d-b4e4-9fa4414d16f0/

Exploit#

https://wpscan.com/vulnerability/8006876f-27bb-483d-b4e4-9fa4414d16f0/

History#

Version 12026-09-18Record published in the CVE List.

Published

Published: 2026-09-18
Last modified: 2026-09-18

Vendor information

Vendor: Not stated
Product: MasterStudy LMS WordPress Plugin

Score

3.8 Low

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 25.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Insecure Direct Object Reference

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 3.7.50
Fixed
3.7.50

Scoring System

CVSS v4.0

Not available

CVSS v3.1

3.8 Low

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	High
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	Low
Availability	Low

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).