Kiteworks Email Protection Gateway has a Cross-site Scripting vulnerability

published 2026-02-27 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-9067

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

accellion kiteworks_email_protection_gateway 9.2.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 8 mo ago (2026-03-03)

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
NVD	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected products

kiteworks security-advisories

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /kiteworks/security-advisories/security/advisories/GHSA-7hxj-ch78-xqgr
vendor-advisory

Sources

CVE List CVE-2026-28272
NVD CVE-2026-28272

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary