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EUVD-2026-358871

fkie_cve-2026-34491

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.

GHSA-2fj7-6j2c-3972

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.

ICSA-26-225-14 — Johnson Controls Metasys

A low-privilege user can inject a malicious XSS payload into the Metasys UI via a crafted URL. The payload persists across logins and executes in the browser context of other users, including administrators.