EUVD-2026-69851
GHSA-573w-cgmm-9w7h
Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
Instructor is a user-level authenticated role (PR:L), not a site administrator; no confidentiality impact; limited integrity and availability to course content only.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
6DescriptionCVE.org
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.
AnalysisAI
Cross-instructor content tampering in MasterStudy LMS WordPress Plugin before 3.7.46 allows authenticated instructor-role users to delete or modify curriculum sections and materials belonging to courses owned by other instructors. The root cause is CWE-639 (Authorization Bypass Through User-Controlled Key): the plugin performs operations on curriculum objects without confirming the requesting instructor owns the parent course. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a WordPress user account with the instructor role on the target site running MasterStudy LMS Plugin before 3.7.46. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.8 (AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L) accurately captures the constrained blast radius: there is no confidentiality impact, and integrity and availability damage is limited to course content rather than site-wide compromise. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade MasterStudy LMS WordPress Plugin to version 3.7.46 or later, which introduces proper ownership verification on curriculum object operations. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Unauthenticated information disclosure in MasterStudy LMS WordPress Plugin before 3.7.46 exposes the titles and IDs of a
Unauthenticated information disclosure in MasterStudy LMS WordPress Plugin (all versions before 3.7.46) exposes per-stud
Unauthenticated information disclosure in MasterStudy LMS WordPress Plugin before 3.7.46 exposes learning statistics for
Payment verification bypass in MasterStudy LMS WordPress Plugin before 3.7.40 permits unauthenticated attackers to fraud
Open redirect in MasterStudy LMS WordPress Plugin before version 3.7.43 enables unauthenticated attackers to supply an u
Broken object-level authorization in MasterStudy LMS WordPress Plugin before 3.7.46 exposes course sales records of any
Instructors in MasterStudy LMS WordPress Plugin versions before 3.7.46 can read quiz questions, correct answers, and exp
MasterStudy LMS WordPress Plugin versions before 3.7.42 expose order billing records - including customer names, email a
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External POC / Exploit Code
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