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    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.

    Published:Aug 24, 2026
    Last Modified:Aug 25, 2026
    EPS:Aug 24, 2026
    EPSS Score:0.00284
    CVSS Score:6.1

    Affected Products

    Vendor
    Johnson Controls
    Product
    Metasys 14
    Vendor
    Johnson Controls
    Product
    Metasys 15
    Vendor
    Johnsoncontrols
    Product
    Metasys

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High