CVE-2026-28272
Received Received - Intake

Stored XSS in Kiteworks Email Protection Gateway Allows Script Injection

Publication date: 2026-02-27

Last updated on: 2026-03-04

Assigner: GitHub, Inc.

Description
Kiteworks is a private data network (PDN). Prior to version 9.2.0, a vulnerability in Kiteworks Email Protection Gateway allows authenticated administrators to inject malicious scripts through a configuration interface. The stored script executes when users interact with the affected user interface. Version 9.2.0 contains a patch for the issue.

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Meta Information

Published
2026-02-27
Last Modified
2026-03-04
Generated
2026-07-06
AI Q&A
2026-02-27
EPSS Evaluated
2026-07-05
NVD
CVE-2026-28272
EUVD
EUVD-2026-9067

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
accellion kiteworks to 9.2.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

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Executive Summary

CVE-2026-28272 is a high-severity Cross-site Scripting (XSS) vulnerability in Kiteworks Email Protection Gateway versions prior to 9.2.0. Authenticated administrators can inject malicious scripts through a configuration interface. These stored scripts then execute when users interact with the affected user interface, potentially compromising the confidentiality and integrity of the system.

Impact Analysis

This vulnerability can lead to the execution of malicious scripts within the user interface, which may compromise the confidentiality and integrity of data handled by the Kiteworks Email Protection Gateway. Although it does not affect system availability, the scope of impact extends beyond the vulnerable component, potentially allowing attackers to manipulate or steal sensitive information. Exploitation requires network access, high privileges, and user interaction.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

The recommended immediate step to mitigate this vulnerability is to upgrade the Kiteworks Email Protection Gateway to version 9.2.0 or later.

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