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CVE-2023-6000

MediumPublished

Popup Builder < 4.2.3 - Unauthenticated Stored XSS

Published: Jan 1, 2024
Updated: Jun 18, 2025
Assigning CNA: WPScan
Evidence observed: Aug 7, 2026

Primary CVSS

6.1/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS probability estimate

2.0%

Low · next 30 days

Percentile: 79.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

The Popup Builder WordPress plugin before 4.2.3 does not prevent simple visitors from updating existing popups, and injecting raw JavaScript in them, which could lead to Stored XSS attacks.

Sources

CVE-2023-6000Detection
The Popup Builder WordPress plugin before 4.2.3 does not prevent simple visitors from updating existing popups, and injecting raw JavaScript in them, which could lead to Stored XSS attacks.
CVE-2023-6000-POCPoC
This vulnerability displays an XSS flaw in a WordPress popup plugin, allowing attackers to inject malicious JavaScript through a stored XSS

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