CVE-2026-102146: Kiteworks Email Protection Gateway Arbitrary File Write through Server-Side Template Injection
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 Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An authenticated Email Protection Gateway administrator with limited, delegated permissions can exploit it. The issue allows that administrator to exceed the privileges intended for their delegated role.
What level of access does exploitation require?
The attacker must have authenticated administrator access, including a limited delegated administrator role. No user interaction is required.
What could an attacker do after exploiting it?
They could write attacker-controlled content to arbitrary locations that the Email Protection Gateway service account can access. This may allow alteration of application files or configuration and disruption of service availability.