Kiteworks Core: Stored cross-site scripting enables administrator account takeover
Summary
Kiteworks Core contains a stored cross-site scripting (XSS) vulnerability (CWE-79). An unauthenticated remote attacker can store crafted content that runs arbitrary JavaScript in the session of an administrator who views the affected page. The attacker could then gain full administrative control, including creating a new administrative account. The attack requires that an administrator views the malicious content.
Affected
- Kiteworks Core before 9.5.1 (CVE record: affected 0 to < 9.5.1)
Fixed in
- Kiteworks Core 9.5.1 or later (vendor advisory GHSA-xgh2-fgj6-w93r and CVE record)
Workaround
- No vendor workaround known.
- Limit network access to the Kiteworks Core admin interface to trusted internal networks until patched.
Exploitation
- CVSS 9.3 (CRITICAL), CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation none, automatable yes, technical impact partial.
- Not listed in CISA KEV at time of research.
- No public proof of concept found.
- No confirmed exploitation reported.
Our recommendation
- Confirm your Kiteworks Core version in the admin console and upgrade to 9.5.1 or later.
- Check whether the Core admin interface is reachable from the internet and restrict access if possible.
- Review recent admin activity and admin account creation for anything unexpected.
- Enforce multi-factor authentication on all admin accounts.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- GitHub Security Advisory GHSA-xgh2-fgj6-w93r github.com
- CISA CSAF VA-26-274-01 raw.githubusercontent.com
- OpenCVE CVE-2026-102147 app.opencve.io
- Strix CVE-2026-102147 www.strix.ai
- TheHackerWire CVE-2026-102147 www.thehackerwire.com
- Cybersecurity Dive: Kiteworks lifts advisory www.cybersecuritydive.com
- Cybersecurity News: Kiteworks patches vulnerabilities cybersecuritynews.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 03:46.
Original description (NVD)
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.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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