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    CVE-2026-81339

    The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not perform a per-object ownership check when returning a quiz attempt result, allowing any authenticated user with a minimal (subscriber) role to read other students' quiz grades, pass/fail status and attempt timestamps by referencing an attempt identifier belonging to another user.

    Published:Sep 23, 2026
    Last Modified:Sep 28, 2026
    EPS:Sep 23, 2026
    EPSS Score:0.00197
    CVSS Score:4.3

    Affected Products

    Vendor
    Wordpress-extensions
    Product
    Masterstudy Lms

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    CVE-2026-88847 (CVSS 4.3) — The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not verify that a user is enrolled i…
    CVE-2026-88846 (CVSS 5.3) — The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not check whether user registration …
    CVE-2026-88845 (CVSS 4.3) — The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not perform any capability or nonce …
    CVE-2026-88843 (CVSS 7.2) — The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not validate one of its display-styl…
    CVE-2026-81338 (CVSS 4.6) — The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not properly sanitise and restrict H…
    CVE-2026-81340 (CVSS 3.8) — The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not perform per-object ownership or …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High