CVE-2026-25369: Flexmls Idx

High severity, CVSS 7.1. EPSS: 0.1% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in flexmls Flexmls® IDX flexmls-idx allows Reflected XSS.This issue affects Flexmls® IDX: from n/a through <= 3.15.9.

Affected products

• Flexmls Flexmls Idx: up to and including 3.15.9

Published 2026-03-16. Last modified 2026-06-17.