What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Extend Themes Colibri Page Builder colibri-page-builder allows Stored XSS.This issue affects Colibri Page Builder: from n/a through < 1.0.334.
Explanation of Vulnerability in Simple Terms
02Summary
Colibri Page Builder versions up to 1.0.334 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with high privileges can inject malicious scripts that execute in the browsers of other site visitors. The vulnerability requires user interaction to trigger and affects the integrity and confidentiality of site data.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in visitors' browsers to steal data or perform actions on their behalf.
Potential impact on your site
04Site Impact
Compromised admin accounts can inject persistent malware affecting all site visitors and their data.
Conditions required to exploit
05Prerequisites
Attacker must have high-level admin or editor privileges and a victim must visit an affected page.
Key dates
06Disclosure timeline
October 22, 2025
CVE published
April 28, 2026
Record updated