CVE-2026-81198: low-severity vulnerability in MasterStudy LMS WordPress Plugin
MasterStudy LMS < 3.7.46 - Instructor+ Cross-Course Curriculum Deletion and Tampering via IDOR
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 3.8epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
Affected products
Unknown · MasterStudy LMS WordPress Pluginpublic PoCs found — 1
cve_referencewpscan.com/vulnerability/424b3a47-78fe-4c95-a317-c1deaf2b7b0c/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — MasterStudy LMS WordPress Plugin
In the same product, most dangerous first.
CVE-2023-4278HIGHMasterStudy LMS < 3.0.18 - Unauthenticated Instructor Account CreationEPSS 6.2%CVE-2024-5973CRITICALMasterStudy LMS < 3.3.24 - Privilege Escalation to InstructorEPSS 0.5%CVE-2026-81199MEDIUMMasterStudy LMS < 3.7.46 - Unauthenticated Student Statistics Disclosure via student/stats REST RouteEPSS 0.5%CVE-2026-88843HIGHMasterStudy LMS 3.5.29 - < 3.7.50 - Contributor+ LFI via Elementor Courses Categories WidgetEPSS 0.4%CVE-2026-81197MEDIUMMasterStudy LMS < 3.7.46 - Unauthenticated Unpublished Course Title Disclosure via course-list REST RouteEPSS 0.3%CVE-2026-81195MEDIUMMasterStudy LMS < 3.7.46 - Unauthenticated Student Enrollment Disclosure via student-courses REST RouteEPSS 0.3%