CVE-2026-28272
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| accellion | kiteworks | to 9.2.0 (exc) |
Helpful Resources
Exploitability
| 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
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
The recommended immediate step to mitigate this vulnerability is to upgrade the Kiteworks Email Protection Gateway to version 9.2.0 or later.