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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Johnson Controls
  • Metasys 14
  • Metasys 15

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
References
Link Providers
https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories cve-icon cve-icon
History

Mon, 24 Aug 2026 19:00:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting Vulnerability in Johnson Controls Metasys 14 and 15
Weaknesses CWE-79

Mon, 24 Aug 2026 17:45:00 +0000

Type Values Removed Values Added
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.
First Time appeared Johnson Controls
Johnson Controls metasys 14
Johnson Controls metasys 15
CPEs cpe:2.3:a:johnson_controls:metasys_14:*:*:*:*:*:*:*:*
cpe:2.3:a:johnson_controls:metasys_15:*:*:*:*:*:*:*:*
Vendors & Products Johnson Controls
Johnson Controls metasys 14
Johnson Controls metasys 15
References
Metrics cvssV4_0

{'score': 6.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U'}
cve-icon MITRE

Status: PUBLISHED

Assigner: jci

Published:

Updated: 2026-08-24T17:24:25.732Z

Reserved: 2026-03-30T08:25:11.763Z

Link: CVE-2026-34491

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-24T18:17:00.337

Modified: 2026-08-24T18:17:00.337

Link: CVE-2026-34491

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-24T18:45:05Z