# CVE-2026-102107: Kiteworks Core authorization bypass in file-request feature

Source: https://junglewise.ai/threats/cve-2026-102107-kiteworks-core-contains-a-business-logic-flaw-in-a-kiteworks  
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-2026-102107 · Severity: medium · CVSS 4.6 · Published 2026-09-30

Kiteworks Core, a secure file-sharing and collaboration platform, contains a flaw in its file-request feature that allows authenticated users to impersonate other users. An attacker could craft requests that appear to come from a trusted colleague to trick recipients into sharing sensitive files or information, but only if the feature is enabled and the recipient acts on the fraudulent request.

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

## Quick answers

**Is CVE-2026-102107 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102107 being exploited in the wild.

**How severe is CVE-2026-102107?** Medium severity, with a CVSS score of 4.6, published 30 September 2026.

**Which products and versions are affected?** Kiteworks Core before 9.5.1.

**Is there a fix for CVE-2026-102107?** A patch was published on 2026-09-30: version 9.5.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-102107 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-102107?** 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

The vulnerability is an authorization bypass due to insufficient server-side validation of user identity in the file-request feature. An authenticated attacker can manipulate the request to appear as another user, exploiting a user-controlled key in the authorization logic (CWE-639). Exploitation requires the feature to be enabled in the attacker's profile and user interaction from the targeted recipient; the flaw was patched in version 9.5.1.

## Affected products

- Kiteworks Core before 9.5.1

## Timeline

- 2026-09-30: disclosed
- 2026-09-30: patched: version 9.5.1

## References

- [https://github.com/kiteworks/security-advisories/security/advisories/GHSA-wv69-6ghf-h3c4](https://github.com/kiteworks/security-advisories/security/advisories/GHSA-wv69-6ghf-h3c4)
- [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)

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- [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)