CVE-2026-102095

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. Kiteworks Email Protection Gateway performed server-side fetches of URLs contained in the message content it processed, without adequately restricting the fetch destination. A remote, unauthenticated sender could craft a message that caused the gateway to issue requests to internal services and cloud instance metadata endpoints and return the responses, potentially disclosing sensitive internal data and, depending on the internal service reached, affecting its state.

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-2026-102095

EUVD

EUVD-2026-90377

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 is vulnerable to Server-Side Request Forgery (SSRF). The gateway fetches URLs from message content without proper restrictions, allowing unauthenticated remote senders to force it to request internal services or cloud metadata endpoints. This could expose sensitive internal data or alter the state of internal services.

Detection Guidance

Detecting this SSRF vulnerability requires monitoring network traffic from the Kiteworks Email Protection Gateway. Check for outbound requests to internal IP ranges (e.g., 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) or cloud metadata endpoints (e.g., 169.254.169.254). Inspect gateway logs for unusual URL fetches in message content.

Impact Analysis

An attacker could exploit this to access internal systems, steal sensitive data, or manipulate internal services by sending crafted messages. This may lead to data breaches, unauthorized access, or service disruption depending on the internal services targeted.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR (data protection) and HIPAA (health information privacy). Non-compliance risks include fines, legal penalties, and reputational damage due to potential breaches of sensitive data.

Mitigation Strategies

Upgrade Kiteworks Email Protection Gateway to version 9.5.0 or later. Disable server-side URL fetching in message processing until patched. Restrict outbound traffic from the gateway to trusted external endpoints only. Monitor for suspicious internal requests.

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