CVE-2026-82850

Masteriyo LMS <= 3.4.1 - Authenticated (Subscriber+) Information Exposure

2026-09-22 00:00

Strategic Overview

Status: Patched in 3.4.2
Affected Plugin: Masteriyo LMS – LMS Course Builder, Quizzes & Certificates
Affected Version: <= 3.4.1
CVSS: 4.3Medium
Weakness type: CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE: CVE-2026-82850

View all Masteriyo LMS – LMS Course Builder, Quizzes & Certificates vulnerabilities

At a glance

CVE-2026-82850 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the Masteriyo LMS WordPress plugin, affecting versions <= 3.4.1. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 3.4.2; sites on affected versions should update now. Disclosed September 2026, reported by Usama Arshad.

Vulnerability Overview

The Masteriyo LMS plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.4.1. This makes it possible for authenticated attackers, with subscriber-level access and above, to extract sensitive user or configuration data.

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 interaction from a victim user.

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Reaching this weakness in Masteriyo LMS <= 3.4.1 takes an account at Subscriber level or above. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.

The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For Masteriyo LMS the fix is 3.4.2: builds <= 3.4.1 are affected, anything from 3.4.2 onward is not.

Remediation

Update to version 3.4.2, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: Masteriyo LMS 3.4.2 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-82850 https://www.wordfence.com/threat-intel/vulnerabilities/id/8c6702f5-f7eb-497c-a9a2-679daabd6637 https://nvd.nist.gov/vuln/detail/CVE-2026-82850

Related records

Same weakness class

Other vulnerabilities in Masteriyo LMS – LMS Course Builder, Quizzes & Certificates

CVSS Vector

4.3

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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