CVE-2026-81339: medium-severity vulnerability in MasterStudy LMS WordPress Plugin
MasterStudy LMS < 3.7.50 - Subscriber+ Quiz Attempt Grade Disclosure via IDOR
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 4.3epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected products
Unknown · MasterStudy LMS WordPress Pluginpublic PoCs found — 1
cve_referencewpscan.com/vulnerability/f027d0b1-5d8a-4e80-adb3-bbf97dc53306/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.
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