---
id: "CVE-2026-80069"
kind: "vulnerability"
aliases: ["CVE-2026-80069"]
title: "MasterStudy LMS WordPress plugin: any logged-in user can trigger error disclosure"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["masterstudy-lms", "package", "php", "wordpress"]
not_affected_if: ["display-errors-off", "version-3.7.50-or-later"]
published_at: "2026-10-29T15:17:24+00:00"
first_seen_at: "2026-10-29T15:25:40+00:00"
updated_at: "2026-10-29T15:26:48+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80069", "first_seen_at": "2026-10-29T15:25:40+00:00"}]
---

# MasterStudy LMS WordPress plugin: any logged-in user can trigger error disclosure

Before version 3.7.50, the MasterStudy LMS plugin for WordPress lets any authenticated user, including Subscribers, call the test-email AJAX handler without a capability or nonce check. The call can cause a PHP fatal error that, when display_errors is on, reveals the server's absolute plugin path.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed MasterStudy LMS version in the WordPress admin plugin list; affected if below `3.7.50`.
- Check whether `display_errors` is enabled in `php.ini` or the WordPress debug settings.

## Fix

- MasterStudy LMS plugin: move to `3.7.50` or later.

## Timeline

- 2026-10-29T15:25:40+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-80069

## From the sources

MasterStudy LMS plugin for WordPress before 3.7.50 contains a missing authorization vulnerability that allows any authenticated user, including Subscribers, to trigger the stm_lms_send_test_email_ajax AJAX action without capability or nonce validation. Attackers can invoke this handler directly or via cross-site request forgery to cause an uncaught PHP fatal error that, when display_errors is enabled, discloses the absolute filesystem path of the plugin.

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