Stored Cross-Site Scripting in Popup Builder Plugin for WordPress

CVE-2025-9856

What is CVE-2025-9856?

The Popup Builder plugin for WordPress is susceptible to a Stored Cross-Site Scripting vulnerability via its 'sg_popup' shortcode across all versions up to 4.4.1. This flaw arises from inadequate sanitization of user input and failing to properly escape output. Consequently, authenticated attackers with contributor-level access can inject malicious scripts into pages. These scripts will execute whenever users visit the compromised page, potentially leading to unauthorized actions and data exposure.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch →

References