---
id: CVE-2026-102103
title: >-
  Kiteworks Email Protection Gateway before version 9.5.0 is vulnerable to
  Server-Side Request Forgery (SSRF)
summary: >-
  Kiteworks Email Protection Gateway before version 9.5.0 is vulnerable to
  Server-Side Request Forgery (SSRF). A server-side request forgery (SSRF)
  weakness in Kiteworks Email Protection Gateway could allow a remote,
  unauthenticated attack…
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H'
cwe:
  - CWE-918
vendor: Kiteworks
product: Email Protection Gateway
affected:
  - email_protection_gateway < 9.5.0
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T21:16:57.127'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102103'
references:
  - url: >-
      https://github.com/kiteworks/security-advisories/security/advisories/GHSA-p435-6c3j-4gh5
    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: '2026-09-30T21:25:07.823Z'
---

## Overview

Kiteworks Email Protection Gateway before version 9.5.0 is vulnerable to Server-Side Request Forgery (SSRF). A server-side request forgery (SSRF) weakness in Kiteworks Email Protection Gateway could allow a remote, unauthenticated attacker to induce the gateway to issue crafted requests to internal or otherwise unintended network destinations. The requests are triggered while the gateway retrieves a certificate revocation list in an inbound message. Depending on the services reachable from the gateway, this could disclose sensitive internal information or disrupt gateway operation.

## Remediation

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