MasterStudy LMS 1.9 - < 3.7.50 - Subscriber+ Membership Plan Quota and Category Restriction Bypass
Priority LOW 18CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00116 1st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed MasterStudy LMS (Unknown): 3.7.50
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | MasterStudy LMS | 1.9 to before 3.7.50 | 3.7.50 | Patch available | CNA |
- MasterStudy LMS VendorUnknown Affected 1.9 to before 3.7.50 Fixed in 3.7.50 Patch available CNA
Remediation
- Fix · CNA MasterStudy LMS (Unknown) Fixed in 3.7.50
Timeline
- 2026-10-02 Threatist record created from CVE-2026-88848
- 2026-10-03 Alias added: GHSA-94g4-5p99-4jgx
References
Sources
- CVE-2026-88848 · CVE Program
- CVE-2026-88848 · NVD
- FIRST EPSS
- GHSA-94g4-5p99-4jgx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences