What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in CyberChimps Responsive Blocks – WordPress Gutenberg Blocks allows Stored XSS.This issue affects Responsive Blocks – WordPress Gutenberg Blocks: from n/a through 1.8.8.
Explanation of Vulnerability in Simple Terms
02Summary
The Responsive Blocks plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in versions up to 1.8.8. An authenticated user with low privileges can inject malicious scripts into block content. When other users view the affected page, the script executes in their browser, potentially allowing the attacker to steal session tokens, modify page content, or perform actions on their behalf. The vulnerability requires user interaction to trigger.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute when other users view the affected page, stealing their session data or performing actions as them.
Potential impact on your site
04Site Impact
Authenticated users can inject persistent malicious code into your site that affects all visitors, compromising user accounts and site integrity.
Conditions required to exploit
05Prerequisites
Attacker must be logged in with at least low-level WordPress user privileges and trick a user into viewing a page containing the malicious block.
Key dates
06Disclosure timeline
August 18, 2024
CVE published
April 28, 2026
Record updated