CVE-2026-3001 Gutenverse <= 3.4.6 - Reflected Cross-Site Scripting via 's' Parameter
Unauthenticated attackers can inject arbitrary scripts via a crafted URL if the search result title block is active, requiring user interaction to execute.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-3001?
CVE-2026-3001 is a medium-severity cross-site scripting vulnerability in jegstudio Gutenverse – WordPress Blocks, Page Builder & Site Editor, published on 27 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The Gutenverse plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 's' parameter in all versions up to, and including, 3.4.6 due to insufficient input sanitization and output escaping. Specifically, the `render_content()` method in `class-search-result-title.php` outputs the value of `get_query_var('s')` directly into the page HTML without applying `esc_html()` or any other escaping function. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages via a crafted URL that execute if a user clicks the link, provided the `gutenverse/search-result-title` block is present on the site's search results template.
Weakness: CWE-79
Which versions are affected by CVE-2026-3001?
How do I fix CVE-2026-3001?
No fix has been published for CVE-2026-3001 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-3001 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3001 exists.
Public exploit code: 1 Nuclei template.
Sources
Also known as GHSA-ch38-8ggq-4hxr.