CVE-2026-34495: Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Johnson

Q: How do I fix CVE-2026-34495?

fms employee: upgrade to newer than 2025.3.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-34495 being exploited?

CVE-2026-34495 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-34495 affect?

CVE-2026-34495 affects fms employee. Severity is medium (CVSS 5.4). Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Johnson Controls FM Systems Employee allows Stored XSS. This issue affects FM Systems Employee: before 2025.3.1.

Q: How urgent is CVE-2026-34495?

Priority 22/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2026-34495 is a medium-severity flaw (CVSS 5.4) affecting fms employee. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Johnson Controls FM Systems Employee allows Stored XSS. This issue affects FM Systems Employee: before 2025.3.1.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-07-31
Last modified	2026-10-23

Publisher (CNA): Johnson Controls · Vendor: johnsoncontrols

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-31 18:17 UTCPublished CVE record published
2026-10-23 23:10 UTCUpdated Record last modified

johnsoncontrols fms employee UPGRADE

Affected: <= 2025.3.1

Fixed in: newer than 2025.3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy fms-employee || rpm -q fms-employee || fms-employee --version

2. UPGRADE to newer than 2025.3.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fms-employee

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fms-employee

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34495?

fms employee: upgrade to newer than 2025.3.1. Exact commands for each OS are on this page.

Is CVE-2026-34495 being exploited?

CVE-2026-34495 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34495 affect?

CVE-2026-34495 affects fms employee. Severity is medium (CVSS 5.4). Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Johnson Controls FM Systems Employee allows Stored XSS. This issue affects FM Systems Employee: before 2025.3.1.

How urgent is CVE-2026-34495?

Priority 22/100. No elevated risk signals yet.

Related CVEs

CVE-2026-21662 CRITICAL 9.8 UPGRADE Unrestricted upload of file with dangerous type vulnerability in Johnson Controls FM Systems Employee allows U
CVE-2026-34497 MEDIUM 5.4 UPGRADE Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in Johnson Control

References

← Back to latest CVEs