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

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. 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

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