What is the CVSS score of CVE-2026-28272?

CVE-2026-28272 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N. EPSS exploitation probability: 0.0%.

Which versions of Kiteworks are affected by CVE-2026-28272?

A high-severity vulnerability in Kiteworks Email Protection Gateway (versions prior to 9.2.0) allows authenticated administrators to inject malicious scripts, potentially enabling unauthorized…

How to fix or mitigate CVE-2026-28272?

Within 24 hours: Inventory all Kiteworks instances and confirm versions; restrict administrative access to the configuration interface to essential personnel only and enable detailed audit logging. Within 7 days: Contact Kiteworks support for 9.2.0 upgrade timeline and interim patches; implement compensating controls (network segmentation, IP whitelisting for admin access). Within 30 days: Complete upgrade to Kiteworks 9.2.0 or later; conduct security audit of recent administrative configuration changes and validate no malicious scripts were injected.

Kiteworks CVE-2026-28272

HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-02-27 security-advisories@github.com

XSS Kiteworks

8.1

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

8.1 HIGH

AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Feb 27, 2026 - 21:16 nvd

HIGH 8.1

DescriptionGitHub Advisory

Kiteworks is a private data network (PDN). Prior to version 9.2.0, a vulnerability in Kiteworks Email Protection Gateway allows authenticated administrators to inject malicious scripts through a configuration interface. The stored script executes when users interact with the affected user interface. Version 9.2.0 contains a patch for the issue.

AnalysisAI

Kiteworks Email Protection Gateway prior to version 9.2.0 contains a stored cross-site scripting vulnerability in its configuration interface that allows authenticated administrators to inject malicious scripts executed against other users. An admin with high privileges can exploit this to compromise user sessions and data through the affected UI. No patch is currently available for this vulnerability.

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects the a configuration component of Kiteworks. Kiteworks is a private data network (PDN). Prior to version 9.2.0, a vulnerability in Kiteworks Email Protection Gateway allows authenticated administrators to inject malicious scripts through a configuration interface. The stored script executes when users interact with the affected user interface. Version 9.2.0 contains a patch for the issue.

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.