---
id: CVE-2026-102104
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: accellion
product: kiteworks
affected:
  - kiteworks < 9.5.0
patched:
  - kiteworks 9.5.0
published: '2026-09-30'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T13:43:18.307'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102104'
references:
  - url: >-
      https://github.com/kiteworks/security-advisories/security/advisories/GHSA-mqw3-m87w-4fx4
    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
epss: 0.00715
epssPercentile: 0.53532
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-01T13:21:53.782057Z'
ingestedAt: '2026-09-30T21:25:07.824Z'
---

## 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 performs an online certificate status check for an inbound message. Depending on the services reachable from the gateway, this could disclose sensitive internal information or disrupt gateway operation.

## Affected

- `kiteworks < 9.5.0`

## Remediation

Upgrade past the affected range:

- `kiteworks 9.5.0`