CVE-2026-39666: WordPress Hello Bar Popup Builder plugin <= 1.5.1 - Cross Site Scripting (XSS) vulnerability

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-08 · updated 2026-07-24
Weakness: CWE-79

Description

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: through 1.5.1

References

https://patchstack.com/database/Wordpress/Plugin/hellobar/vulnerability/wordpress-hello-bar-popup-builder-plugin-1-5-1-cross-site-scripting-xss-vulnerability?_s_id=cve

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