An authorization check in the large file exchange feature of Kiteworks Email Protection Gateway did not correctly establish that the requesting user was a party to the package being requested. An authenticated user of that optional feature could read the subject, message body, and attachments of packages they neither sent nor received.

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Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Thu, 01 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Kiteworks
Kiteworks kiteworks Email Protection Gateway
Vendors & Products Kiteworks
Kiteworks kiteworks Email Protection Gateway

Thu, 01 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 30 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Description An authorization check in the large file exchange feature of Kiteworks Email Protection Gateway did not correctly establish that the requesting user was a party to the package being requested. An authenticated user of that optional feature could read the subject, message body, and attachments of packages they neither sent nor received.
Title Kiteworks Email Protection Gateway Incorrect Authorization
Weaknesses CWE-639
CWE-863
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisa-cg

Published:

Updated: 2026-10-01T13:37:07.509Z

Reserved: 2026-09-28T17:39:13.564Z

Link: CVE-2026-102139

cve-icon Vulnrichment

Updated: 2026-10-01T13:32:20.311Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-30T21:17:02.663

Modified: 2026-10-01T14:17:18.493

Link: CVE-2026-102139

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T15:30:08Z

Weaknesses