CVE-2026-102128

EUVD-2026-90289
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 11.26%
Affected Products (NVD)
VendorProductVersion
accellionkiteworks
𝑥
< 9.5.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
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