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Vulnerability record · CVE-2026-102128 · published 30 September 2026

CVE-2026-102128: Improper authentication vulnerability

An identity-verification weakness in Kiteworks Email Protection Gateway allowed the gateway to act on the Kiteworks platform on behalf of a user it had not authenticated, and to provision a platform account for an identity it did not already know. A remote, unauthenticated sender could potentially exploit this to obtain control of a platform account.

7.5 CVSS 3.1 High CWE-287 · Improper authentication Awaiting Analysis
7.5CVSS 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 identity-verification weakness in Kiteworks Email Protection Gateway allowed the gateway to act on the Kiteworks platform on behalf of a user it had not authenticated, and to provision a platform account for an identity it did not already know. A remote, unauthenticated sender could potentially exploit this to obtain control of a platform account.

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

References

LinkTags
https://github.com/kiteworks/security-advisories/security/advisories/GHSA-qjvp-25r3-rgx6
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-2026-102128), CISA KEV, FIRST EPSS. This page is refreshed as NVD updates the record.