Vulnerability · Published May 5, 2026 · Assigned by Wordfence
CVE-2026-2868Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem <= 3.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'separatorIconSVG'
Medium 6.4
In plain English
A medium-severity cross-site scripting in Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem from jegstudio. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities).
Official description
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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| jegstudio | Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem | 0 – through 3.5.3 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N