Name: CVE-2026-39666: Improper Neutralization of Input During Web Page Generation
Creator: Rapid7
Published: 2026-04-08T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-39666, CWE-79, CVSS 6.5, EPSS 0.00224

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.

CVSS Details

CVSS 3.1 Base Score: 6.5
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Hellobar Plugin	—	Update hellobar plugin to version 1.5.2, or a newer patched version	Jun 9, 2026	Feb 18, 2026

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CVSS Details

Covered by Rapid7

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