PatchTheCVECVE-2026-34497: Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in Johnson Control
22
Routine
MEDIUM 5.4UPGRADE
CVE-2026-34497 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 Script-Related HTML tags in a web page (basic XSS) vulnerability in Johnson Controls FM Systems Employee allows Cross-Site Scripting (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-80 |
| Published | 2026-07-31 |
| Last modified | 2026-10-23 |
Publisher (CNA): Johnson Controls · Vendor: johnsoncontrols
Am I affected?
Timeline
- Published CVE record published
- Updated 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.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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-2026-34495 MEDIUM 5.4 UPGRADE Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Johnson