CVE-2026-102126

High

Description

A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an administrator holding only a single, narrowly scoped delegated permission to store crafted content that later executes arbitrary JavaScript in the authenticated session of a System Administrator who views the affected page. This could have permitted the lower-privileged administrator to escalate to full administrative control of the tenant, including the creation of a new administrative account.

SeverityHigh

CVSS8.1

Exploit probability—

ProductAccellion Kiteworks

PublishedSep 30, 2026

First seenSep 30, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

accellion kiteworks9.5.1 or later

Vendor advisories

github.com/kiteworks/security-advisories/security/advisories/GHSA-ccfx-6hq4-fx4g

Affected products

Product	Affected versions	Fixed in
accellion kiteworks	v < 9.5.1	9.5.1

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