CVE-2026-39666: Telepathy Hello Bar Popup Builder

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in telepathy Hello Bar Popup Builder hellobar allows DOM-Based XSS.This issue affects Hello Bar Popup Builder: from n/a through <= 1.5.1.

Affected products

• Telepathy Hello Bar Popup Builder: up to and including 1.5.1

Published 2026-04-08. Last modified 2026-07-24.