CVE-2026-82850: CWE-200 Information Exposure in Masteriyo LMS
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.
AI Analysis
Technical Summary
CVE-2026-82850 is an information exposure vulnerability (CWE-200) in the Masteriyo LMS WordPress plugin prior to version 3.4.2. The plugin fails to properly restrict access to quiz answer keys, allowing any authenticated user to obtain correct answers for any quiz on the site, including those outside their enrollment. The redaction mechanism only applies to a limited set of question types, resulting in full exposure of answers for other question types to any user able to view the questions.
Potential Impact
Authenticated users, such as students, can access correct quiz answers for all quizzes on the site, including those for courses they are not enrolled in. This undermines the integrity of assessments and could lead to unauthorized access to course content or unfair academic advantage.
Mitigation Recommendations
Upgrade Masteriyo LMS to version 3.4.2 or later, where this vulnerability is fixed. No other mitigation is necessary once the plugin is updated.
CVE-2026-82850: CWE-200 Information Exposure in Masteriyo LMS
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.
CVSS v3.1
Score 4.3medium
Affected software
Masteriyo LMS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-82850 is an information exposure vulnerability (CWE-200) in the Masteriyo LMS WordPress plugin prior to version 3.4.2. The plugin fails to properly restrict access to quiz answer keys, allowing any authenticated user to obtain correct answers for any quiz on the site, including those outside their enrollment. The redaction mechanism only applies to a limited set of question types, resulting in full exposure of answers for other question types to any user able to view the questions.
Potential Impact
Authenticated users, such as students, can access correct quiz answers for all quizzes on the site, including those for courses they are not enrolled in. This undermines the integrity of assessments and could lead to unauthorized access to course content or unfair academic advantage.
Mitigation Recommendations
Upgrade Masteriyo LMS to version 3.4.2 or later, where this vulnerability is fixed. No other mitigation is necessary once the plugin is updated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-31T08:27:38.422Z
- State
- PUBLISHED
Threat ID: 6ab4c0b3f7a7c54106f3a83b
Added to database: 09/24/2026, 06:18:27 UTC
Last enriched: 09/24/2026, 06:33:52 UTC
Last updated: 09/25/2026, 02:11:50 UTC
Views: 10
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