Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ExpressTech Quiz And Survey Master… (CVE-2026-107862)

This vulnerability in ExpressTech Quiz And Survey Master (quiz-master-next) allows an attacker to inject malicious scripts via improperly sanitized input that is reflected in the DOM during page generation. The flaw is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation), specifically enabling DOM-based XSS attacks. It affects all versions up to and including 11.2.7. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requires privileges and user interaction, and impacts confidentiality, integrity, and availability at a low to medium level.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the victim's browser session, potentially leading to information disclosure, session hijacking, or other client-side impacts. The vulnerability impacts confidentiality, integrity, and availability to a limited extent as indicated by the CVSS metrics.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, users should apply standard mitigations for DOM-based XSS such as input validation and output encoding where possible.