CVE-2026-42702: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Themeum Tutor LMS

CVE-2026-42702 is an unauthenticated Cross-Site Scripting (XSS) vulnerability in Tutor LMS versions up to and including 4.1.0. The flaw arises from improper neutralization of input during web page generation, allowing an attacker to inject malicious scripts. The vulnerability has a CVSS 3.1 base score of 7.1, indicating high severity, with network attack vector, low attack complexity, no privileges required, user interaction required, and scope changed. The impact includes limited confidentiality, integrity, and availability loss. No patch or remediation information is provided in the available data.

The vulnerability allows remote unauthenticated attackers to execute arbitrary scripts in the context of the affected web application, potentially leading to limited disclosure of information, modification of data, or disruption of service. The CVSS vector indicates that user interaction is required and the scope is changed, meaning the vulnerability affects components beyond the initially vulnerable component.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch links are provided, users should monitor Themeum's official channels for updates. Until a patch is available, consider applying web application firewall (WAF) rules to detect and block XSS attempts if feasible.