CVE-2026-88848: CWE-863 Incorrect Authorization in MasterStudy LMS
The MasterStudy LMS WordPress plugin from 1.9 before 3.7.50 does not verify that a course a member asks to enrol in is covered by their membership plan, nor that the plan identifier submitted with the request is one they actually hold, allowing any member to enrol themselves into restricted paid courses outside their plan and beyond the number of courses it entitles them to.
AI Analysis
Technical Summary
The MasterStudy LMS WordPress plugin from version 1.9 before 3.7.50 contains an incorrect authorization vulnerability (CWE-863). It does not properly verify that the course a member requests to enroll in is included in their membership plan, nor does it verify that the submitted plan identifier matches one the member actually holds. This flaw permits any member to enroll themselves into paid courses that should be restricted, bypassing membership plan restrictions and course limits.
Potential Impact
An attacker with a valid membership can enroll in paid courses that are not included in their membership plan, potentially gaining unauthorized access to premium content. The impact is limited to confidentiality and integrity with no reported availability impact. The CVSS score of 4.2 reflects a medium severity with network attack vector, high attack complexity, low privileges required, and no user interaction needed.
Mitigation Recommendations
No official patch or remediation information is provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict membership plan enrollment requests or monitor for unauthorized course enrollments as a temporary measure.
CVE-2026-88848: CWE-863 Incorrect Authorization in MasterStudy LMS
Description
The MasterStudy LMS WordPress plugin from 1.9 before 3.7.50 does not verify that a course a member asks to enrol in is covered by their membership plan, nor that the plan identifier submitted with the request is one they actually hold, allowing any member to enrol themselves into restricted paid courses outside their plan and beyond the number of courses it entitles them to.
CVSS v3.1
Score 4.2medium
Affected software
MasterStudy LMS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The MasterStudy LMS WordPress plugin from version 1.9 before 3.7.50 contains an incorrect authorization vulnerability (CWE-863). It does not properly verify that the course a member requests to enroll in is included in their membership plan, nor does it verify that the submitted plan identifier matches one the member actually holds. This flaw permits any member to enroll themselves into paid courses that should be restricted, bypassing membership plan restrictions and course limits.
Potential Impact
An attacker with a valid membership can enroll in paid courses that are not included in their membership plan, potentially gaining unauthorized access to premium content. The impact is limited to confidentiality and integrity with no reported availability impact. The CVSS score of 4.2 reflects a medium severity with network attack vector, high attack complexity, low privileges required, and no user interaction needed.
Mitigation Recommendations
No official patch or remediation information is provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict membership plan enrollment requests or monitor for unauthorized course enrollments as a temporary measure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-10T09:58:42.226Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab63559f7a7c541069038d2
Added to database: 09/25/2026, 08:48:25 UTC
Last enriched: 09/25/2026, 09:02:39 UTC
Last updated: 09/26/2026, 02:46:41 UTC
Views: 31
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.