CVE-2026-102135

Medium

Description

On a Kiteworks Email Protection Gateway cluster with database replication enabled, a party trusted by the cluster could submit a crafted serialized object that was deserialized without sufficient validation, potentially allowing code execution as the gateway service account. Replication is disabled by default, and exploitation requires control of a trusted cluster peer or administrative access to the appliance.

SeverityMedium

CVSS6.6

Exploit probability—

ProductAccellion Kiteworks

PublishedSep 30, 2026

First seenSep 30, 2026

Weakness typeCWE-502Deserialization of untrusted data

How to fix

Update

accellion kiteworks9.5.1 or later

Vendor advisories

github.com/kiteworks/security-advisories/security/advisories/GHSA-vmwr-r5xq-hp49

Affected products

Product	Affected versions	Fixed in
accellion kiteworks	v < 9.5.1	9.5.1

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.