CVE-2026-102100

HIGH 8.7

Kiteworks Core stored XSS

CVSS Score

8.7

EPSS Score

0.0%

EPSS Percentile

0th

Kiteworks Core before version 9.5.0 is vulnerable to Stored Cross-Site Scripting. A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an authenticated user to submit content that, when later viewed by another user, executes arbitrary JavaScript in that user's authenticated session. This could be used to perform actions on the victim's behalf and may have permitted account takeover, including of higher-privileged users. Exploitation requires the victim to view the attacker-supplied content.

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 high 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:L/UI:R/S:C/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

Kiteworks / Core

0 < 9.5.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/kiteworks/security-advisories/security/advisories/GHSA-vr65-9jwc-jgjx raw.githubusercontent.com: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/VA/white/2026/va-26-274-01.json

Credits

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