# CVE-2026-102100: Kiteworks Core stored cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-102100-kiteworks-core-before-version-9-5-0-is-vulnerable-to-stored  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-30. Updated: 2026-09-30  
License: CC BY 4.0 with a link back

CVE-2026-102100 · Severity: high · CVSS 8.7 · Published 2026-09-30

Kiteworks Core is a secure content management and communication platform. A stored XSS vulnerability allows authenticated users to inject malicious code that executes in other users' browsers when they view the attacker's content, potentially leading to account takeover and unauthorized actions against victims.

Technologies: [Kiteworks Core](https://junglewise.ai/threats/technologies/kiteworks-core). Vendors: [Kiteworks](https://junglewise.ai/threats/vendors/kiteworks).

## Quick answers

**Is CVE-2026-102100 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102100 being exploited in the wild.

**How severe is CVE-2026-102100?** High severity, with a CVSS score of 8.7, published 30 September 2026.

**Which products and versions are affected?** Kiteworks Core before 9.5.0.

**Is there a fix for CVE-2026-102100?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-102100 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-102100?** Check whether you run Kiteworks Core at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stored cross-site scripting vulnerability in Kiteworks Core allows authenticated users to submit unvalidated content that persists and executes arbitrary JavaScript in the browsers of subsequent viewers. The attack requires user interaction (victim viewing the malicious content) and operates over the network with scope change affecting other users' sessions and permissions. Upgrading to version 9.5.0 or later resolves the vulnerability.

## Affected products

- Kiteworks Core before 9.5.0

## Timeline

- 2026-09-30: disclosed

## References

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

## Related threats

- [Kiteworks Core stored cross-site scripting in administrative interface](https://junglewise.ai/threats/cve-2026-102147-a-stored-cross-site-scripting-xss-weakness-in-kiteworks-core)
- [Kiteworks Core SSRF via CRLF injection](https://junglewise.ai/threats/cve-2026-102145-an-authenticated-administrator-could-cause-the-server-to-issue)
- [Kiteworks Core remote code execution in notification template](https://junglewise.ai/threats/cve-2026-102142-a-system-notification-template-on-the-kiteworks-appliance-was)
- [Kiteworks Core privilege escalation in cluster-management operations](https://junglewise.ai/threats/cve-2026-102141-two-kiteworks-core-cluster-management-operations-did-not)
- [Kiteworks Core insufficient verification of data authenticity in import](https://junglewise.ai/threats/cve-2026-102140-an-authenticated-administrator-could-initiate-an-administrative)