CVE-2026-82849: medium-severity vulnerability in Masteriyo LMS
Masteriyo LMS < 3.4.2 - Subscriber+ Arbitrary User Course Progress 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 0.2%
The Masteriyo LMS WordPress plugin before 3.4.2 does not verify that the user making the request owns the course-progress records being returned, allowing any authenticated user, such as a self-registered subscriber, to read another user's learning activity. The ownership check it applies is skipped whenever the requested account is not named with a non-zero value, in which case the records of every learner on the site are returned at once.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected products
Unknown · Masteriyo LMSpublic PoCs found — 1
cve_referencewpscan.com/vulnerability/8114501a-3591-4d8c-b73e-a598756d45d7/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Masteriyo LMS
In the same product, most dangerous first.
CVE-2026-82845CRITICALMasteriyo LMS < 3.4.1 - Subscriber+ PHP Object InjectionEPSS 0.6%CVE-2026-82847MEDIUMMasteriyo LMS < 3.4.1 - Instructor+ Stored XSS via Course HighlightsEPSS 0.4%CVE-2026-82846MEDIUMMasteriyo LMS 1.18.0 - 2.3.3 - Instructor+ Stored XSS via Course Custom FieldsEPSS 0.4%CVE-2026-13332CRITICALMasteriyo LMS < 2.3.1 - Unauthenticated Arbitrary User Session Termination (Denial of Service)EPSS 0.4%CVE-2026-82848MEDIUMMasteriyo LMS 1.3.1 - 2.3.3 - Unauthenticated Course Enrollment DisclosureEPSS 0.3%CVE-2026-82851LOWMasteriyo LMS 1.14.0 - 3.4.0 - Instructor+ Arbitrary Post Disclosure via IDOREPSS 0.3%