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Vulnerability record · CVE-2026-28270 · published 27 February 2026

CVE-2026-28270: Accellion kiteworks unrestricted file upload vulnerability

Accellion · Kiteworks

Kiteworks is a private data network (PDN). Prior to version 9.2.0, a vulnerability in Kiteworks configuration allows uploading of arbitrary files without proper validation. Malicious administrators could exploit this to upload unauthorized file types to the system. Version 9.2.0 contains a patch for the issue.

7.2 CVSS 3.1 High EPSS 2.1% · top 18.7% CWE-434 · Unrestricted file upload
7.2CVSS 3.1 base score
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Kiteworks is a private data network (PDN). Prior to version 9.2.0, a vulnerability in Kiteworks configuration allows uploading of arbitrary files without proper validation. Malicious administrators could exploit this to upload unauthorized file types to the system. Version 9.2.0 contains a patch for the issue.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/kiteworks/security-advisories/security/advisories/GHSA-v8x9-vwg6-cj45 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-28270), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.