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CVE-2026-34491

MEDIUM
6.1
CVSS Score
Published: August 24, 2026 at 05:24 PM UTC
Updated: October 14, 2026 at 01:10 PM UTC
1 product affected across 1 vendorMetasys

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Metasys· Johnsoncontrols
90%
0 ≤ v < 14.1.50 ≤ v < 15.0.10
Affected range stops below 14.1.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMjci
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-79

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