What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in pixelgrade Nova Blocks nova-blocks allows DOM-Based XSS.This issue affects Nova Blocks: from n/a through <= 2.1.9.
Explanation of Vulnerability in Simple Terms
02Summary
Nova Blocks versions up to 2.1.9 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site visitors, potentially compromising their sessions or stealing data. The vulnerability requires user interaction to trigger and affects the scope beyond the vulnerable component.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers when they view affected pages.
Potential impact on your site
04Site Impact
Authenticated users can inject code affecting other visitors; compromises site integrity and visitor security.
Conditions required to exploit
05Prerequisites
Attacker must be logged in with low-level user privileges and trick a victim into visiting a crafted page.
Key dates
06Disclosure timeline
January 23, 2026
CVE published
April 28, 2026
Record updated