CVE-2026-81197

MasterStudy LMS WordPress Plugin – for Online Courses and Education < 3.7.46 - Unauthenticated Unpublished Course Data Exposure

2026-08-31 00:00
Revanth Hari Narayana Matte

Strategic Overview

Status
Patched in 3.7.46
Affected Plugin
MasterStudy LMS WordPress Plugin – for Online Courses and Education
Affected Version
< 3.7.46
CVSS
5.3Medium
Weakness type
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE
CVE-2026-81197
View all MasterStudy LMS WordPress Plugin – for Online Courses and Education vulnerabilities

At a glance

CVE-2026-81197 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the MasterStudy LMS WordPress Plugin WordPress plugin, affecting versions < 3.7.46. 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 3.7.46; sites on affected versions should update now. Disclosed August 2026, reported by Revanth Hari Narayana Matte.

Vulnerability Overview

The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to 3.7.46. This is due to missing post_status filter in the get_courses() method called by an unauthenticated REST route, allowing retrieval of non-public courses. This makes it possible for unauthenticated attackers to read the titles and IDs of unpublished (draft, pending, and private) courses belonging to any author.

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-200: Exposure of Sensitive Information to an Unauthorized Actor

MasterStudy LMS WordPress Plugin < 3.7.46 carries this weakness at get_courses(), and reaching it takes no account at all. 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 MasterStudy LMS WordPress Plugin the fix is 3.7.46: builds < 3.7.46 are affected, anything from 3.7.46 onward is not.

Remediation

Update to version 3.7.46, 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: MasterStudy LMS WordPress Plugin 3.7.46 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-81197https://www.wordfence.com/threat-intel/vulnerabilities/id/d82dc4fa-ec99-445f-bec5-08ecc8573b1bhttps://nvd.nist.gov/vuln/detail/CVE-2026-81197

Related records

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