CVE-2026-81340CWE-639

CVE-2026-81340

Low · published September 18, 2026

CVSS v3.1
3.8
EPSS
0%
Percentile
23.5
In the wild
Unconfirmed
What it 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 record
Technical detail
CVSS v3.1
3.8 · LOW
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00318 · 23.5th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-09-18T10:16Z
References (1)
https://wpscan.com/vulnerability/8006876f-27bb-483d-b4e4-9fa4414d16f0/ · [email protected]
EPSS history
Timeline
  • 19 SEP 03:54Z
    EPSS moved — → 0%
    epss
  • 18 SEP 06:00Z
    MasterStudy LMS < 3.7.50 - Instructor+ Order Status Manipulation via IDOR
    cvelistv5