CVE-2026-102146

Kiteworks Email Protection Gateway Arbitrary File Write through Server-Side Template Injection

MEDIUM
6.5
CVSS Score
Published: September 30, 2026 at 08:08 PM UTC
Updated: October 13, 2026 at 11:57 AM UTC
2 products affected across 2 vendorsKiteworksEmail Protection Gateway

Using Email Protection Gateway by Kiteworks?

Get instant alerts when new vulnerabilities affect Email Protection Gateway - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 9.5.1
Vendor states this is fixed in 9.5.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMcisa-cg
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-73

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card