CVE-2026-102139
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Kiteworks | Email Protection Gateway | 0 < 9.5.1 | affected |
| Kiteworks | Email Protection Gateway | 9.5.1 | unaffected |
Weaknesses
- CWE-639: CWE-639 Authorization Bypass Through User-Controlled Key
- CWE-863: CWE-863 Incorrect Authorization
References
- https://github.com/kiteworks/security-advisories/security/advisories/GHSA-fp46-xhg8-vpgm
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json
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