CVE-2026-1395
Received Received - Intake
Stored XSS in Gutentools WordPress Plugin Post Slider Block

Publication date: 2026-04-22

Last updated on: 2026-04-22

Assigner: Wordfence

Description
The Gutentools plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Post Slider block's block_id attribute in all versions up to, and including, 1.1.3. This is due to insufficient input sanitization and output escaping combined with a custom unescaping routine that reintroduces dangerous characters. 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.
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Meta Information
Published
2026-04-22
Last Modified
2026-04-22
Generated
2026-06-16
AI Q&A
2026-04-22
EPSS Evaluated
2026-06-15
NVD
CVE-2026-1395
EUVD
EUVD-2026-24716
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
gutentools gutentools to 1.1.3 (inc)
gutentools plugin to 1.1.3 (inc)
gutentools gutentools_plugin to 1.1.3 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

The Gutentools plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in the Post Slider block's block_id attribute in all versions up to and including 1.1.3.

This vulnerability exists because the plugin does not properly sanitize input or escape output, and a custom unescaping routine reintroduces dangerous characters.

As a result, authenticated users with Contributor-level access or higher can inject malicious web scripts into pages, which will execute whenever any user views those pages.

Impact Analysis

This vulnerability allows attackers with Contributor-level access or above to inject arbitrary scripts into WordPress pages.

These scripts can execute in the browsers of users who visit the affected pages, potentially leading to theft of user credentials, session hijacking, defacement, or distribution of malware.

Because the attack is stored, the malicious code persists and affects all users who access the compromised content.

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