What’s Vulnerable › Vulnerabilities

CVE-2023-6000: Popup Builder < 4.2.3 - Unauthenticated Stored XSS

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-01-01 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• Popup Builder: before 4.2.3 — fixed in 4.2.3

How to fix

Upgrade to a fixed version: Popup Builder 4.2.3. Check the vendor advisory for mitigations.

References

• https://wpscan.com/blog/stored-xss-fixed-in-popup-builder-4-2-3/
• https://wpscan.com/vulnerability/cdb3a8bd-4ee0-4ce0-9029-0490273bcfc8
• https://wpscan.com/blog/stored-xss-fixed-in-popup-builder-4-2-3/
• https://wpscan.com/vulnerability/cdb3a8bd-4ee0-4ce0-9029-0490273bcfc8

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