CVE-2026-39666
Last modified
CVE-2026-39666 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-39666?
How severe is CVE-2026-39666?
How do I fix CVE-2026-39666?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-39660Rejected reason: This CVE ID has been rejected or withdrawn …
- CVE-2026-39661Improper Control of Filename for Include/Require Statement i…7.5
- CVE-2026-39662Missing Authorization vulnerability in ProWCPlugins Product …5.3
- CVE-2026-39663Missing Authorization vulnerability in themetechmount TrueBo…5.3
- CVE-2026-39664Missing Authorization vulnerability in leadrebel Leadrebel l…5.3
- CVE-2026-39665Improper Neutralization of Input During Web Page Generation …6.5
- CVE-2026-39667Improper Neutralization of Input During Web Page Generation …5.9
- CVE-2026-39668Missing Authorization vulnerability in g5theme Book Previewe…5.3
- CVE-2026-39669Missing Authorization vulnerability in NitroPack allows Expl…5.3
- CVE-2026-3967A flaw has been found in Alfresco Activiti up to 7.19/8.8.0.…6.3
- CVE-2026-39670Server-Side Request Forgery (SSRF) vulnerability in Brecht V…6
- CVE-2026-39671Cross-Site Request Forgery (CSRF) vulnerability in Dotstore …7.1
Are you affected by CVE-2026-39666?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST