CVE-2026-81339 — MEDIUM (4.3)

Vulnerability 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.

CVSS Score

4.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Related Weaknesses (CWE)

CWE-639

References

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

FAQ

What is CVE-2026-81339?

CVE-2026-81339 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 ...

How severe is CVE-2026-81339?

CVE-2026-81339 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-81339?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.