CVE-2026-85189
Received Received - Intake

Stored XSS in RegularLabs Modals for Joomla

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: Joomla! Project

Description
Joomla Extension - regularlabs.com - Privileged stored XSS via executable URL schemes in Modals extension for Joomla < 17.0.0 - Modals treats a destination using an executable browser URL scheme as an ordinary modal URL. The value can reach both the generated link and the iframe-loading path. Authored content can consequently become JavaScript in a visitor's browser without using Modals' separate Pro JavaScript Events feature.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-14
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-85189
EUVD
EUVD-2026-77312

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
regularlabs modals to 17.0.0 (exc)

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 vulnerability is a stored Cross-Site Scripting (XSS) flaw in the Modals extension for Joomla versions below 17.0.0. It allows malicious JavaScript code to be stored in user-generated content via executable URL schemes. The Modals extension incorrectly treats these URLs as safe, enabling the code to execute in a visitor's browser without requiring additional features.

Impact Analysis

An attacker could exploit this to inject malicious scripts into web pages viewed by other users. This could lead to unauthorized actions on behalf of users, theft of sensitive data like session cookies, or defacement of the website. Users' browsers could be compromised if they visit a page with the injected script.

Compliance Impact

This vulnerability could lead to breaches of GDPR by exposing user data or enabling unauthorized access to personal information. For HIPAA, it may compromise protected health information if exploited on healthcare-related Joomla sites. Compliance violations could result in legal penalties and reputational damage.

Mitigation Strategies

Update the Modals extension for Joomla to version 17.0.0 or later to address the privileged stored XSS vulnerability.

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