EUVD-2026-18967CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
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3Description
The Gutenverse - Ultimate WordPress FSE Blocks Addons & Ecosystem plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'imageLoad' parameter in versions up to, and including, 3.4.6 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.
Analysis
Stored Cross-Site Scripting in Gutenverse - Ultimate WordPress FSE Blocks Addons & Ecosystem plugin versions up to 3.4.6 allows authenticated attackers with contributor-level access or higher to inject arbitrary JavaScript via the 'imageLoad' parameter, resulting in persistent script execution in pages viewed by other users. CVSS 6.4 reflects medium severity with cross-site scope; no public exploit code or active exploitation has been identified at the time of analysis, but the vulnerability requires only low privileges and no user interaction beyond initial page access.
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