CVE-2026-102127 Kiteworks Email Protection Gateway - XML External Entity Injection

Kiteworks Email Protection Gateway contains an XML external entity injection caused by unrestricted external entity references in an optional message-processing feature, letting remote unauthenticated attackers read files accessible to the gateway service account.

CVSS base score 7.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.19% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
XML External Entity Injection
Impact
Information Disclosure, File System Read
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
Published
30 September 2026
Updated
15 October 2026
Weakness
CWE-611

Vendor fix

Disable the optional message-processing feature or update to the latest version with the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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