Kiteworks Email Protection Gateway Incorrect Authorization
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.
CVE-2026-102139
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-102139
Email Protection Gateway
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Kiteworks",
"product": "Email Protection Gateway",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "9.5.1",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "9.5.1"
}
],
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-102139
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #5171 · Revision 1
- Added to Heist Feed
- Publisher date