CVE-2026-102089: Kiteworks Email Protection Gateway path traversal

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-30 · updated 2026-10-08
Weakness: CWE-22

Description

Kiteworks Email Protection Gateway before version 9.5.0 is vulnerable to a path traversal weakness in an administrative import function allowed an authenticated administrator to write files to arbitrary locations on the server. This could potentially be leveraged to execute arbitrary code on the underlying system.

Affected products

Kiteworks Email Protection Gateway: before 9.5.0 — fixed in 9.5.0

How to fix

Upgrade to a fixed version: Kiteworks Email Protection Gateway 9.5.0. Check the vendor advisory for mitigations.

References

https://github.com/kiteworks/security-advisories/security/advisories/GHSA-p853-p65q-2vc8
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json

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