# 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.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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 available:** No
- **Published:** 27 May 2026
- **Updated:** 27 May 2026
- **Also known as:** GHSA-ch38-8ggq-4hxr

## 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 (Improper Neutralization of Input During Web Page Generation)

## 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.

## 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:

- Gutenverse Plugin <= 3.4.6 - Cross-Site Scripting (nuclei): http/cves/2026/CVE-2026-3001.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3001 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3001 exists.

Affected product: jegstudio Gutenverse – WordPress Blocks, Page Builder & Site Editor. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-3001/ (Markdown: https://insights.sbomify.com/CVE-2026-3001/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3001
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3001
- OSV: https://osv.dev/vulnerability/CVE-2026-3001

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-3001/
Summaries are generated and may contain mistakes; the official description above is the record.