Vulnerability · Published Sep 18, 2026 · Assigned by WPScan

CVE-2026-81340MasterStudy LMS < 3.7.50 - Instructor+ Order Status Manipulation via IDOR

Low 3.8

In plain English

A low-severity authorization bypass via user-controlled key in MasterStudy LMS WordPress Plugin from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).

Severity (CVSS 3.1)3.8Low

Exploit odds (30 days)0.3%top 75.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	MasterStudy LMS WordPress Plugin	0 – before 3.7.50

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L

References

https://wpscan.com/vulnerability/8006876f-27bb-483d-b4e4-9fa4414d16f0/ exploit, vdb-entry, technical-description