CVE-2026-39742
Deferred Deferred - Pending Action

Stored XSS in Gutenberg Blocks by Kadence Blocks

Publication date: 2026-10-29

Last updated on: 2026-10-29

Assigner: Patchstack

Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Liquid Web / StellarWP Gutenberg Blocks by Kadence Blocks kadence-blocks allows Stored XSS.This issue affects Gutenberg Blocks by Kadence Blocks: from n/a through 3.8.0.2.

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Meta Information

Published
2026-10-29
Last Modified
2026-10-29
Generated
2026-10-29
AI Q&A
2026-10-29
EPSS Evaluated
N/A
NVD
CVE-2026-39742
EUVD
EUVD-2026-112866

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Liquid Web / StellarWP Gutenberg Blocks by Kadence Blocks 0

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

This is a Stored Cross-Site Scripting (XSS) vulnerability in the Gutenberg Blocks by Kadence Blocks plugin. It allows attackers to inject malicious scripts into web pages that are stored on the server and executed when other users view those pages.

Impact Analysis

An attacker could steal user sessions, deface websites, or perform actions on behalf of users. Users with access to the affected plugin could exploit this to compromise visitor browsers or steal sensitive data.

Mitigation Strategies

Update the Gutenberg Blocks by Kadence Blocks plugin to the latest version, specifically version 3.8.0.2 or higher, to address the Stored XSS vulnerability.

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