Vulnerability in Gmo Prime Strategy Co., Ltd. Kusanagi 7 Business Edition

CVE-2026-117477

KUSANAGI provided by GMO Prime Strategy Co., Ltd. contains an HTTP header injection vulnerability that may allow arbitrary HTTP headers to be injected into the HTTP response when a user accesses a specially crafted URL.

Published .

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-117477?
CVE-2026-117477 is a medium-severity vulnerability in Gmo Prime Strategy Co., Ltd. Kusanagi 7 Business Edition, classified under HTTP Response Splitting. CVSS score: 6.1/10. Published 2026-11-09.
How severe is CVE-2026-117477?
Medium severity. CVSS v3 base score is 6.1 out of 10.