CVE-2026-102146: Kiteworks Email Protection Gateway

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

An authenticated Email Protection Gateway administrator holding only limited, delegated permissions could write files with attacker-controlled content to arbitrary locations accessible to the Email Protection Gateway service account. This exceeds the administrator's intended privileges and could be used to alter application files and configuration or to disrupt the availability of the service.

Affected products

• Kiteworks Email Protection Gateway: before 9.5.1 (fixed in 9.5.1)

Published 2026-09-30. Last modified 2026-10-01.