---
id: CVE-2026-102126
title: >-
  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
  authenticate…
summary: >-
  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
  authenticate…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N'
cwe:
  - CWE-79
vendor: Kiteworks
product: Core
affected:
  - Core < 9.5.1
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T21:17:00.963'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102126'
references:
  - url: >-
      https://github.com/kiteworks/security-advisories/security/advisories/GHSA-ccfx-6hq4-fx4g
    label: 9119a7d8-5eab-497f-8521-727c672e3725
  - url: >-
      https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json
    label: 9119a7d8-5eab-497f-8521-727c672e3725
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-30T21:25:07.831Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.