CVE-2026-2868: Jegstudio Gutenverse – Ultimate WordPress Fse Blocks Addons & Ecosystem

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'separatorIconSVG' parameter in versions up to, and including, 3.5.3 due to insufficient input sanitization and output escaping. 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 products

• Jegstudio Gutenverse – Ultimate WordPress Fse Blocks Addons & Ecosystem: up to and including 3.5.3

Published 2026-05-05. Last modified 2026-06-17.