CVE-2026-82850

Masteriyo LMS < 3.4.2 - Subscriber+ Quiz Answer Key Disclosure

MEDIUM
4.3
CVSS Score
Published: September 24, 2026 at 06:00 AM UTC
Updated: September 24, 2026 at 02:57 PM UTC
1 product affected across 1 vendorMasteriyo

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

The Masteriyo LMS WordPress plugin before 3.4.2 does not restrict access to quiz answer keys, allowing any authenticated user, such as a student, to retrieve the correct answers for any quiz on the site, including quizzes in courses they are not enrolled in. The redaction that hides them is applied only to a fixed list of question types, so the answers to every other type are returned in full to anyone able to view the questions.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Masteriyo· Masteriyowordpress-plugin
60%
v < 3.4.2
Affected range stops below 3.4.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitVDB EntryTechnical Description
Source: cverecord
https://wpscan.com/vulnerability/b26150aa-9220-4eb3-a160-0f5301faacc7/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-200

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