---
id: CVE-2026-102127
title: >-
  An XML parser used by Kiteworks Email Protection Gateway did not restrict
  external entity references
summary: >-
  An XML parser used by Kiteworks Email Protection Gateway did not restrict
  external entity references. Where an optional, non-default message-processing
  feature is enabled, a remote and unauthenticated sender could potentially use
  a craft…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L'
cwe:
  - CWE-611
vendor: Kiteworks
product: Email Protection Gateway
affected:
  - email_protection_gateway < 9.5.1
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T21:17:01.117'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102127'
references:
  - url: >-
      https://github.com/kiteworks/security-advisories/security/advisories/GHSA-9jwc-h943-6f84
    label: 9119a7d8-5eab-497f-8521-727c672e3725
  - url: >-
      https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json
    label: 9119a7d8-5eab-497f-8521-727c672e3725
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-30T21:25:07.831Z'
---

## Overview

An XML parser used by Kiteworks Email Protection Gateway did not restrict external entity references. Where an optional, non-default message-processing feature is enabled, a remote and unauthenticated sender could potentially use a crafted message to read files accessible to the gateway service account, including cryptographic key material and credentials, and have them sent to a destination they control.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.