CVE-2026-3001 PoC — Gutenverse <= 3.4.6 - Reflected Cross-Site Scripting via 's' Parameter

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-3001.yaml

Associated Vulnerability

Title: Gutenverse <= 3.4.6 - Reflected Cross-Site Scripting via 's' Parameter (CVE-2026-3001)
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.

Description

The Gutenverse plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 's' parameter in versions up to and including 3.4.6. The issue arises due to insufficient input sanitization and output escaping in the `render_content()` method of `class-search-result-title.php`, which outputs the value of `get_query_var('s')` directly into the page HTML without applying `esc_html()`. This makes it possible for unauthenticated attackers to inject and execute arbitrary web scripts in pages via a crafted URL, provided the `gutenverse/search-result-title` block is present on the site's search results template.

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