This vulnerability (CVE-2026-27404) affects Designthemes LMS versions up to 9.7 and involves improper neutralization of input during web page generation, resulting in unauthenticated cross-site scripting (XSS). The CVSS 3.1 base score is 7.1, indicating a high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and scope changed. The impact includes partial loss of confidentiality, integrity, and availability. There is no vendor advisory or patch information available at this time.

Successful exploitation of this vulnerability allows unauthenticated attackers to execute arbitrary scripts in the context of the vulnerable web application, potentially leading to partial confidentiality compromise (e.g., theft of sensitive information), partial integrity loss (e.g., manipulation of displayed content), and partial availability impact (e.g., disruption of service).

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider applying web application firewall (WAF) rules to detect and block XSS payloads and restrict user input where feasible.