MasterStudy LMS Plugin up to 3.7.49 on WordPress authorization

Summaryinfo

A vulnerability, which was classified as critical, has been found in MasterStudy LMS Plugin up to 3.7.49. This issue affects some unknown processing. The manipulation leads to authorization. This vulnerability is referenced as CVE-2026-81340. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in MasterStudy LMS Plugin up to 3.7.49 and classified as critical. This issue affects an unknown functionality. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at wpscan.com. The identification of this vulnerability is CVE-2026-81340 since 08/26/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 3.7.50 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• MasterStudy LMS Plugin

Version

• 3.7.0
• 3.7.1
• 3.7.2
• 3.7.3
• 3.7.4
• 3.7.5
• 3.7.6
• 3.7.7
• 3.7.8
• 3.7.9
• 3.7.10
• 3.7.11
• 3.7.12
• 3.7.13
• 3.7.14
• 3.7.15
• 3.7.16
• 3.7.17
• 3.7.18
• 3.7.19
• 3.7.20
• 3.7.21
• 3.7.22
• 3.7.23
• 3.7.24
• 3.7.25
• 3.7.26
• 3.7.27
• 3.7.28
• 3.7.29
• 3.7.30
• 3.7.31
• 3.7.32
• 3.7.33
• 3.7.34
• 3.7.35
• 3.7.36
• 3.7.37
• 3.7.38
• 3.7.39
• 3.7.40
• 3.7.41
• 3.7.42
• 3.7.43
• 3.7.44
• 3.7.45
• 3.7.46
• 3.7.47
• 3.7.48
• 3.7.49

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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