CVE-2026-8279

Masteriyo LMS <= 2.2.0 - Missing Authorization to Unauthenticated Arbitrary Course Progress Deletion

2026-09-06 00:00
Jamshed Yergashvoyev (CVE Guy)

Strategic Overview

Status
Patched in 2.2.1
Affected Plugin
Masteriyo LMS – LMS Course Builder, Quizzes & Certificates
Affected Version
<= 2.2.0
CVSS
5.3Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-8279
View all Masteriyo LMS – LMS Course Builder, Quizzes & Certificates vulnerabilities

At a glance

CVE-2026-8279 is a medium-severity Missing Authorization vulnerability in the Masteriyo LMS WordPress plugin, affecting versions <= 2.2.0. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.2.1; sites on affected versions should update now. Disclosed September 2026, reported by Jamshed Yergashvoyev (CVE Guy).

Vulnerability Overview

The Masteriyo LMS plugin for WordPress is vulnerable to unauthorized data deletion due to a missing capability check on the 'delete_item_permissions_check' function in the CourseProgressItemsController in all versions up to, and including, 2.2.0. This makes it possible for unauthenticated attackers to delete arbitrary course progress records belonging to any student.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-862: Missing Authorization

Masteriyo LMS <= 2.2.0 carries this weakness at delete_item_permissions_check, and reaching it takes no account at all. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Masteriyo LMS the fix is 2.2.1: builds <= 2.2.0 are affected, anything from 2.2.1 onward is not.

Remediation

Update to version 2.2.1, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Masteriyo LMS 2.2.1 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-8279https://www.wordfence.com/threat-intel/vulnerabilities/id/d317d40b-2b99-408b-b445-1a789df3c958https://nvd.nist.gov/vuln/detail/CVE-2026-8279

Related records

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