CVE-2026-102139
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductAccellion Kiteworks
PublishedSep 30, 2026
First seenSep 30, 2026
How to fix
Update
- accellion kiteworks9.5.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| accellion kiteworks | v < 9.5.1 | 9.5.1 |
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