What is CVE-2026-26724?

CVE-2026-26724 is a high-severity vulnerability in Keystorage Global Facilities Management Software, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-02-20.

How severe is CVE-2026-26724?

High severity. CVSS v3 base score is 7.6 out of 10.

XSS in Keystorage Global Facilities Management Software

CVE-2026-26724

Cross Site Scripting vulnerability in Key Systems Inc Global Facilities Management Software v. 20230721a allows a remote attacker to execute arbitrary code via the selectgroup and gn parameters on the /?Function=Groups endpoint.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-02-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (35.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.002

Affected products

Keystorage Global Facilities Management Software — versions 20230721a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/chndlrx/vulnerability-disclosures/tree/main/CVE-2026-26724 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-26724?: CVE-2026-26724 is a high-severity vulnerability in Keystorage Global Facilities Management Software, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-02-20.
How severe is CVE-2026-26724?: High severity. CVSS v3 base score is 7.6 out of 10.