---
title: "CVE-2026-102127: Kiteworks Email Protection Gateway - XML External Entity Injection"
description: "Kiteworks Email Protection Gateway contains an XML external entity injection caused by unrestricted external entity references in an optional message-processing feature, letting remote unauthenticated attackers read files accessible to the gateway service account."
url: https://panop.io/threat-heartbeat/CVE-2026-102127/
---

# CVE-2026-102127 Kiteworks Email Protection Gateway - XML External Entity Injection

Kiteworks Email Protection Gateway contains an XML external entity injection caused by unrestricted external entity references in an optional message-processing feature, letting remote unauthenticated attackers read files accessible to the gateway service account.

CVSS base score 7.0 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.19% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-102127)

## Details

Type

XML External Entity Injection

Impact

Information Disclosure, File System Read

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

Published

30 September 2026

Updated

15 October 2026

Weakness

[CWE-611](https://cwe.mitre.org/data/definitions/611.html)

## Vendor fix

Disable the optional message-processing feature or update to the latest version with the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-102127](https://nvd.nist.gov/vuln/detail/CVE-2026-102127)
- [https://github.com/kiteworks/security-advisories/security/advisories/GHSA-9jwc-h943-6f84](https://github.com/kiteworks/security-advisories/security/advisories/GHSA-9jwc-h943-6f84)
- [https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf\_files/VA/white/2026/va-26-274-01.json](https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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