Vulnerability · Published Jun 27, 2026 · Assigned by Wordfence

CVE-2026-11773Masteriyo LMS <= 2.2.1 - Missing Authorization to Authenticated (Student+) Arbitrary Course Announcement Modification

Medium 4.3

In plain English

A medium-severity missing authorization in Masteriyo LMS – LMS Course Builder, Quizzes & Certificates from masteriyo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.2%top 83.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Masteriyo LMS – LMS Course Builder, Quizzes & Certificates plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.2.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with student-level access and above, to modify the description (post content) of arbitrary course announcements authored by instructors or administrators.

Affected products (as reported)

Vendor	Product	Versions
masteriyo	Masteriyo LMS – LMS Course Builder, Quizzes & Certificates	0 – through 2.2.1

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

In plain English

Official description

Affected products (as reported)

References