CVE-2026-102105

Received Received - Intake

Server-Side Request Forgery in Kiteworks Email Protection Gateway

Publication date: 2026-09-30

Last updated on: 2026-09-30

Assigner: Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government

Description

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 renders message content that references external resources. Depending on the services reachable from the gateway, this could disclose sensitive internal information or trigger unintended actions on internal systems.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-30

Last Modified

2026-09-30

Generated

2026-10-01

AI Q&A

2026-10-01

EPSS Evaluated

N/A

NVD

CVE-2026-102105

EUVD

EUVD-2026-90314

Affected Vendors & Products

Vendor	Product	Version / Range
kiteworks	email_protection_gateway	to 9.5.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-918	The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

Executive Summary

Kiteworks Email Protection Gateway before version 9.5.0 has a Server-Side Request Forgery (SSRF) vulnerability. This allows a remote, unauthenticated attacker to trick the gateway into making crafted requests to internal or unintended network destinations. The issue occurs when the gateway processes message content referencing external resources.

Impact Analysis

This vulnerability could allow an attacker to access sensitive internal information or trigger unintended actions on internal systems reachable from the gateway. The impact depends on what services are accessible from the gateway's network.

Mitigation Strategies

Immediately update Kiteworks Email Protection Gateway to version 9.5.0 or later to address the SSRF vulnerability. Disable rendering of external resources in email content if possible. Restrict network access to the gateway to limit exposure to internal systems.

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