CVE-2026-26723: Cross Site Scripting vulnerability in Key Systems Inc Global Facilities Management Software v

This month

HIGH 8.2DOWNGRADE

CVE-2026-26723 is a high-severity flaw (CVSS 8.2) affecting global facilities management software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting vulnerability in Key Systems Inc Global Facilities Management Software v. 20230721a allows a remote attacker to execute arbitrary code via the function parameter.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-02-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: keystorage

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-20 17:25 UTCPublished CVE record published
2026-06-17 10:26 UTCUpdated Record last modified

keystorage global facilities management software DOWNGRADE

Affected: 20230721a

Fixed in: no fixed release known

Safe to downgrade to: a release before 20230721a

1. Check installed version

apt-cache policy global-facilities-management-software || rpm -q global-facilities-management-software || global-facilities-management-software --version

2. No fixed release: DOWNGRADE to a release before 20230721a (Debian / Ubuntu)

apt-cache madison global-facilities-management-software sudo apt install global-facilities-management-software=<VERSION_BEFORE_20230721a> sudo apt-mark hold global-facilities-management-software

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list global-facilities-management-software sudo dnf downgrade global-facilities-management-software-<VERSION_BEFORE_20230721a> sudo dnf versionlock add global-facilities-management-software

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-26723?

global facilities management software: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-26723 being exploited?

CVE-2026-26723 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-2026-26723 affect?

CVE-2026-26723 affects global facilities management software. Severity is high (CVSS 8.2). Cross Site Scripting vulnerability in Key Systems Inc Global Facilities Management Software v. 20230721a allows a remote attacker to execute arbitrary code via the function parameter.

How urgent is CVE-2026-26723?

Priority 41/100. High severity; Public exploit reference

Related CVEs

CVE-2026-26724 HIGH 7.6 DOWNGRADE Cross Site Scripting vulnerability in Key Systems Inc Global Facilities Management Software v
CVE-2026-26722 CRITICAL 9.4 DOWNGRADE An issue in Key Systems Inc Global Facilities Management Software v.20230721a allows a remote attacker to esca
CVE-2026-26721 HIGH 7.1 DOWNGRADE An issue in Key Systems Inc Global Facilities Management Software v.20230721a allows a remote attacker to obta

References

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