CVE-2026-42743 MEDIUM

CVE-2026-42743: WordPress Masteriyo - LMS plugin <= 2.1.8 - Broken Authentication vulnerability

Vendor Themegrill
Product Masteriyo - LMS
Weakness CWE-347
Published June 15, 2026
Last update June 16, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Unauthenticated Broken Authentication in Masteriyo - LMS <= 2.1.8 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Masteriyo LMS versions up to 2.1.8 contain an improper cryptographic signature verification flaw. An attacker can forge authentication tokens or tamper with signed data without valid credentials. This allows unauthorized access to LMS features and user data. Update to a version newer than 2.1.8 to resolve the issue.

What an attacker can do

03Attacker Capabilities

Forge authentication tokens or tamper with cryptographically signed data to gain unauthorized access.

Potential impact on your site

04Site Impact

Attackers can bypass authentication and access student records, course content, and administrative functions without valid credentials.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

June 15, 2026 CVE published
June 16, 2026 Record updated

Related vulnerabilities

08Related CVE

CVE-2025-9485 OAuth Single Sign On – SSO (OAuth Client) <= 6.26.12 - Authentication Bypass via get_resource_owner_from_id_token() CVE-2026-0750 Payment bypass in Commerce Paybox CVE-2026-10795 UpdraftPlus: WP Backup & Migration Plugin <= 1.26.4 - Unauthenticated Authentication Bypass via UpdraftCentral udrpc CVE-2026-5050 Payment Gateway for Redsys & WooCommerce Lite <= 7.0.0 - Improper Verification of Cryptographic Signature to Unauthenticated Payment Status Manipulation