The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Post Comment Block 'suffixMain' Attribute in all versions up to, and including, 4.0.8 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. WordPress core wp_kses_post sanitization does not mitigate this vulnerability because the payload is stored inside a Gutenberg block delimiter comment rather than as a raw HTML tag, and is only rendered as exploitable HTML at the PHP render stage.
CVE-2026-3002 is a stored cross-site scripting (XSS) vulnerability in the Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem plugin. It affects all versions up to and including 4.0.2. Authenticated users with Contributor-level access or higher can inject malicious scripts into pages, which execute when other users view those pages. The vulnerability arises from insufficient input sanitization and output escaping in multiple blocks of the plugin.
The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in the 'titleTag' block attribute. This affects all versions up to and including 4.0.2. Authenticated users with contributor-level access or higher can inject malicious scripts that execute when any user views the affected page, including administrators and editors during post preview. The vulnerability arises because the malicious input bypasses standard sanitization and is rendered dynamically at runtime.
The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.8.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Startupzy by Jegstudio contains a missing authorization vulnerability (CWE-862) affecting versions up to and including 1.1.1. This flaw allows exploitation of incorrectly configured access control security levels, potentially leading to unauthorized actions. The vulnerability has a CVSS score of 4.3, indicating medium severity. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
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.
The Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem plugin for WordPress is vulnerable to Server-Side Request Forgery in versions up to, and including, 3.5.3 via the import_images() function. This makes it possible for authenticated attackers, with contributor-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.
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.
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.
The Gutenverse Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG file upload in all versions up to, and including, 2.3.2. This is due to the plugin's framework component adding SVG to the allowed MIME types via the upload_mimes filter without implementing any sanitization of SVG file contents. This makes it possible for authenticated attackers, with Author-level access and above, to upload SVG files containing malicious JavaScript that executes when the file is viewed, leading to arbitrary JavaScript execution in victims' browsers.
Missing Authorization vulnerability in Jegstudio Gutenverse Form gutenverse-form allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Gutenverse Form: from n/a through <= 2.3.1.
Missing Authorization vulnerability in Jegstudio Gutenverse Form gutenverse-form allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Gutenverse Form: from n/a through <= 2.2.0.
The Gutenverse plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's Animated Text and Fun Fact blocks in all versions up to, and including, 3.1.0 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
The Gutenverse News plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘elementId’ parameter in all versions up to, and including, 1.0.4 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.
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Jegstudio Gutenverse allows Stored XSS.This issue affects Gutenverse: from n/a through 1.9.4.
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Jegstudio Gutenverse allows Stored XSS.This issue affects Gutenverse: from n/a through 1.9.2.