CVE-2026-59513 MEDIUM

CVE-2026-59513: WordPress Masteriyo - LMS plugin <= 2.3.0 - Cross Site Scripting (XSS) vulnerability

Vendor Masteriyo

Product Masteriyo - LMS

Weakness CWE-79 · XSS

Published July 23, 2026

Last update July 23, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Subscriber Cross Site Scripting (XSS) in Masteriyo - LMS <= 2.3.0 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Masteriyo LMS versions up to 2.3.0 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. An attacker with low-level access can craft a request that executes JavaScript in other users' browsers, potentially stealing session tokens or performing actions on their behalf. The vulnerability requires user interaction and affects the confidentiality, integrity, and availability of the site.

What an attacker can do

03Attacker Capabilities

Inject JavaScript that runs in other users' browsers to steal data or perform actions as them.

Potential impact on your site

04Site Impact

Authenticated users' accounts and data are at risk; attackers can impersonate users and modify course content or student records.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege account and the victim must visit a page containing the malicious payload.

Key dates

06Disclosure timeline

July 23, 2026 CVE published

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-59513 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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