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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Kiteworks Email Protection Gateway unknown
Version Status Constraints
0 affected < 9.5.1
9.5.1 unaffected —

No data.

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/kiteworks/security-advisories/security/advisories/GHSA-qjvp-25r3-rgx6 cve-icon cve-icon
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json cve-icon cve-icon
History

Wed, 30 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
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.
Title Kiteworks Email Protection Gateway Improper Authentication
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisa-cg

Published:

Updated: 2026-09-30T20:14:40.084Z

Reserved: 2026-09-28T17:39:13.563Z

Link: CVE-2026-102128

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-30T21:17:01.270

Modified: 2026-09-30T21:17:01.270

Link: CVE-2026-102128

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-30T22:15:14Z

Weaknesses