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TI-2026-57155 Aliases CVE-2026-82851GHSA-pwq8-2w9x-rh69

Masteriyo LMS 1.14.0 - 3.4.0 - Instructor+ Arbitrary Post Disclosure via IDOR

Priority LOW 13CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.

Summary

The Masteriyo LMS WordPress plugin before 3.4.1 does not verify ownership of, or restrict the type of, the records a user requests for download, allowing users with the instructor role to retrieve the full content and metadata of arbitrary posts, including other instructors' private and draft courses.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00299 22nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Masteriyo LMS (Unknown): 3.4.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownMasteriyo LMS1.14.0 to before 3.4.13.4.1Patch availableCNA
  • Masteriyo LMS VendorUnknown Affected 1.14.0 to before 3.4.1 Fixed in 3.4.1 Patch available CNA

Remediation

  • Fix · CNA Masteriyo LMS (Unknown) Fixed in 3.4.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Masteriyo LMS 3.4.1

    3 records Highest priority Priority MEDIUM 1 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-57149 Masteriyo LMS < 3.4.1 - Subscriber+ PHP Object InjectionPriority MEDIUM 44
    • TI-2026-57151 Masteriyo LMS < 3.4.1 - Instructor+ Stored XSS via Course HighlightsPriority LOW 32
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-82851
  2. 2026-10-03 Alias added: GHSA-pwq8-2w9x-rh69

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences