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TI-2026-56086 Aliases CVE-2026-81198GHSA-573w-cgmm-9w7h

MasterStudy LMS < 3.7.46 - Instructor+ Cross-Course Curriculum Deletion and Tampering via IDOR

Priority LOW 18CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.

Summary

The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.46 does not properly verify ownership of a curriculum object before acting on it, allowing authenticated users with the instructor role to delete or modify curriculum sections and materials belonging to courses owned by other instructors.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00318 24th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed MasterStudy LMS WordPress Plugin (Unknown): 3.7.46

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

VendorProductAffected versionsFixed inStatusSource
UnknownMasterStudy LMS WordPress Pluginbefore 3.7.463.7.46Patch availableCNA
  • MasterStudy LMS WordPress Plugin VendorUnknown Affected before 3.7.46 Fixed in 3.7.46 Patch available CNA

Remediation

  • Fix · CNA MasterStudy LMS WordPress Plugin (Unknown) Fixed in 3.7.46

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    MasterStudy LMS WordPress Plugin 3.7.46

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2026-56087 MasterStudy LMS < 3.7.46 - Unauthenticated Student Statistics Disclosure via student/stats REST RoutePriority LOW 31
    • TI-2026-56085 MasterStudy LMS < 3.7.46 - Unauthenticated Unpublished Course Title Disclosure via course-list REST RoutePriority LOW 30
    • TI-2026-56083 MasterStudy LMS < 3.7.46 - Unauthenticated Student Enrollment Disclosure via student-courses REST RoutePriority LOW 30
    Show all 6 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81198
  2. 2026-10-03 Alias added: GHSA-573w-cgmm-9w7h

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences