CVE-2026-102099

Received Received - Intake

Arbitrary File Write in Kiteworks Core

Publication date: 2026-09-30

Last updated on: 2026-09-30

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

Description

Kiteworks Core before version 9.5.0 is vulnerable to Arbitrary File Write. An improper restriction of a user-supplied file path in a Kiteworks administrative export feature could allow an authenticated administrator to write a file to an arbitrary location on the underlying host, potentially leading to command execution on the appliance. Exploitation requires an existing, authenticated administrative account with access to the affected export function.

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-2026-102099

EUVD

EUVD-2026-90378

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-22	The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Attack-Flow Graph

Executive Summary

Kiteworks Core before version 9.5.0 has an Arbitrary File Write vulnerability. An authenticated administrator can exploit a flaw in the export feature to write files to any location on the host system. This could allow them to execute commands on the appliance.

Impact Analysis

If you are an administrator using Kiteworks Core before 9.5.0, an attacker with access could write malicious files to critical system locations. This may lead to full system compromise, data theft, or disruption of services.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR and HIPAA requirements for data protection and access controls. Non-compliance may result in legal penalties and reputational damage.

Mitigation Strategies

Upgrade Kiteworks Core to version 9.5.0 or later to address the arbitrary file write vulnerability. Ensure only trusted administrators have access to the export function and monitor for unauthorized file writes or suspicious activity.

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