Stored Cross-Site Scripting Vulnerability in Mosaic Generator Plugin for WordPress

CVE-2025-8621

What is CVE-2025-8621?

The Mosaic Generator plugin for WordPress is susceptible to Stored Cross-Site Scripting (XSS) attacks through the 'c' parameter. Due to inadequate input sanitization and output escaping, an attacker with Contributor-level access can exploit this vulnerability to inject malicious scripts. These scripts execute when users visit compromised pages, potentially compromising user data and site integrity. It's crucial for users to update to patched versions or implement security measures to mitigate this risk.

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