What is CVE-2026-28272?

CVE-2026-28272 is a high-severity vulnerability in Accellion Kiteworks, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2026-02-27.

How severe is CVE-2026-28272?

High severity. CVSS v3 base score is 8.1 out of 10.

XSS in Accellion Kiteworks

CVE-2026-28272

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 e…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (25.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N.

Affected products

Accellion Kiteworks
Kiteworks Security-advisories — versions < 9.2.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-28272?: CVE-2026-28272 is a high-severity vulnerability in Accellion Kiteworks, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2026-02-27.
How severe is CVE-2026-28272?: High severity. CVSS v3 base score is 8.1 out of 10.