CVE-2026-34491
Received Received - Intake

Cross-Site Scripting in Johnson Controls Metasys

Publication date: 2026-08-24

Last updated on: 2026-08-24

Assigner: Johnson Controls

Description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Johnson Controls Metasys 14 and Johnson Controls Metasys 15 allows Cross Site Scripting. This issue affects Metasys 14: before 14.1.5; Metasys 15: before 15.0.1.

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Meta Information

Published
2026-08-24
Last Modified
2026-08-24
Generated
2026-08-24
AI Q&A
2026-08-24
EPSS Evaluated
N/A
NVD
CVE-2026-34491
EUVD
EUVD-2026-65005

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
johnson_controls metasys to 14.1.5 (exc)
johnson_controls metasys to 15.0.1 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a cross-site scripting (XSS) vulnerability in Johnson Controls Metasys versions 14 and 15. It allows attackers to inject malicious scripts into web pages viewed by users, potentially stealing data or performing unauthorized actions.

Impact Analysis

An attacker could exploit this to steal session cookies, redirect users to malicious sites, or perform actions on behalf of users. This could lead to unauthorized access to sensitive data or system controls.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR (data protection) and HIPAA (health information privacy). Organizations may face fines, legal penalties, and reputational damage if exploited.

Mitigation Strategies

Update Metasys 14 to version 14.1.5 or later and Metasys 15 to version 15.0.1 or later to address the XSS vulnerability.

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