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CVE-2025-9856

MEDIUM 6.4 CVSS 3.1
Published
December 13, 2025
Last modified
October 7, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

The Popup Builder – Create highly converting, mobile friendly marketing popups. plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'sg_popup' shortcode in all versions up to, and including, 4.4.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected WordPress components

  • Popup Builder – Create highly converting, mobile friendly marketing popups. Plugin · popup-builder
    Confirmed match Active
    Up to and including 4.4.1
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • popupbuilder Popup Builder – Create highly converting, mobile friendly marketing popups. — Up to and including 4.4.1

References