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Vulnerability record · CVE-2026-102127 · published 30 September 2026

CVE-2026-102127: XML external entity (XXE) vulnerability

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.

7.0 CVSS 3.1 High CWE-611 · XML external entity (XXE) Awaiting Analysis
7.0CVSS 3.1 base score
-EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
1 Oct 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

References

LinkTags
https://github.com/kiteworks/security-advisories/security/advisories/GHSA-9jwc-h943-6f84
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json

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Source: NIST National Vulnerability Database (record CVE-2026-102127), CISA KEV, FIRST EPSS. This page is refreshed as NVD updates the record.