CVE-2026-102147

CRITICAL 9.3

Kiteworks Core Administrative Account Takeover through Stored Cross-site Scripting (XSS)

CVSS Score

9.3

EPSS Score

0.0%

EPSS Percentile

0th

A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an unauthenticated attacker to store crafted content that later executes arbitrary JavaScript in the authenticated session of an administrator who views the affected page. This could have permitted the attacker to gain full administrative control, including the creation of a new administrative account.

CWE	CWE-79
Vendor	kiteworks
Product	core
Published	Sep 30, 2026

Stay Ahead of the Next One

Get instant alerts for kiteworks core

Be the first to know when new critical vulnerabilities affecting kiteworks core are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

Kiteworks / Core

0 < 9.5.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/kiteworks/security-advisories/security/advisories/GHSA-xgh2-fgj6-w93r raw.githubusercontent.com: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json

Credits

wlayzz, https://yeswehack.com/hunters/wlayzz Icare, https://yeswehack.com/hunters/icare Supr4s, https://yeswehack.com/hunters/supr4s truff, https://yeswehack.com/hunters/truff