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HIGH

CVE-2026-102127

CVSS v3

7

HIGH

EPSS Score

0.3 %

exploit probability, as of 2026-10-01

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

An XML parser used by Kiteworks Email Protection Gateway did not restrict external entity references. Where an optional, non-default message-processing feature is enabled, a remote and unauthenticated sender could potentially use a crafted message to read files accessible to the gateway service account, including cryptographic key material and credentials, and have them sent to a destination they control.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
Published
2026-09-30
Last Modified
2026-10-01

Frequently asked questions

What is CVE-2026-102127?

An XML parser used by Kiteworks Email Protection Gateway did not restrict external entity references. Where an optional, non-default message-processing feature is enabled, a remote and unauthenticated sender could potentially use a crafted message to read files accessible to the gateway service account, including cryptographic key material and credentials, and have them sent to a destination they control.

Is CVE-2026-102127 actively exploited?

Active exploitation of CVE-2026-102127 has not been confirmed. Its EPSS score was 0.3% on 2026-10-01, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-102127?

CVE-2026-102127 has a CVSS v3 base score of 7 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L.

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