Karthik Ramakrishnan

The User Registration & Membership WordPress plugin before 5.2.8 does not check the capability of the user making a membership purchase, and does not validate the payment method or the plan submitted with it, allowing any authenticated user such as a subscriber to be granted the WordPress role attached to a paid plan without paying for it. Where the site owner has mapped a plan to a privileged role, this leads to privilege escalation up to administrator.

The User Registration & Membership WordPress plugin before 5.2.8 does not verify that the visitor requesting its membership confirmation page owns the account named in the request, nor that any registration or purchase has taken place, allowing unauthenticated users to retrieve another user's email address, profile fields, role and membership order details. Exploitation requires the site owner to have added a user smart tag to that page's configurable message, which the shipped default does not contain.

The Masteriyo LMS WordPress plugin before 3.4.1 does not prevent user-supplied values held as metadata from being deserialized when they are read back, allowing users with a minimal account to inject arbitrary PHP objects and, by way of a class shipped in a library bundled with the Masteriyo LMS WordPress plugin before 3.4.1, write and execute arbitrary code on the server. A weaker form of the same issue is reachable without an account and yields an arbitrary file write rather than code execution.

The Booking for Appointments and Events Calendar WordPress plugin before 2.4.10 does not verify that the user editing a customer or employee record is entitled to modify the WordPress account linked to it, allowing users holding Amelia's customer or employee management permissions to set the password and email address of other users' WordPress accounts and take them over.

The Masteriyo LMS WordPress plugin before 3.4.1 does not sanitise and escape one of its course fields before outputting it back in the course editor, allowing users with the instructor role to perform Stored Cross-Site Scripting attacks against higher privileged users such as administrators.

The Masteriyo LMS WordPress plugin before 3.4.1 does not verify ownership of, or restrict the type of, the records a user requests for download, allowing users with the instructor role to retrieve the full content and metadata of arbitrary posts, including other instructors' private and draft courses.

The Masteriyo LMS WordPress plugin before 3.4.0 does not perform any authorization check before returning a course enrolment record over its REST API, allowing unauthenticated users to read any learner's enrolment status, timestamps and course-progress data by walking sequential record identifiers. A related gap lets any enrolled user retrieve other learners' enrolment records as well.

The WPLP Cookie Consent WordPress plugin before 4.4.2 does not perform nonce or capability checks on one of its cookie scanner AJAX actions, allowing any authenticated user, such as a subscriber, to read back the automated scan schedule the administrator configured.

🚨 CVE-2026-84221 The Kirki WordPress plugin before 6.3.0 does not escape a user-supplied identifier before using it in a SQL query, allowing users with editor-level access and above to append arbitrary SQL and read the contents of the database, including user credentials. 🎖@cveNotify

**Name of the Vulnerable Software and Affected Versions** Meow Gallery versions prior to 5.5.2 **Description** Insufficient escaping of an attachment's alt text allows users with the Author role or higher to perform a Stored Cross-Site Scripting (XSS) attack. By injecting a JavaScript payload into the alt text, the script executes in the browser of any visitor, including administrators, who views a post containing a linked gallery. **Recommendations** Update Meow Gallery to version 5.5.2 or later.