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CVE-2026-82845

CRITICAL 9.9 CVSS 3.1
Published
September 12, 2026
Last modified
September 14, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
Weakness
CWE-502
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Description

The Masteriyo LMS WordPress plugin before 3.4.1 does not prevent user-supplied values held as metadata from being deserialized when they are read back, allowing users with a minimal account to inject arbitrary PHP objects and, by way of a class shipped in a library bundled with the Masteriyo LMS WordPress plugin before 3.4.1, write and execute arbitrary code on the server. A weaker form of the same issue is reachable without an account and yields an arbitrary file write rather than code execution.

Affected WordPress components

  • Masteriyo LMS – LMS Course Builder, Quizzes & Certificates Plugin · learning-management-system
    Confirmed match Active
    Before 3.4.1
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown Masteriyo LMS — Before 3.4.1

References

  • wpscan.com https://wpscan.com/vulnerability/5ced30ea-8b78-495f-b10c-42b3f10adcb3/
  • nvd.nist.gov Official NVD record