CVE-2026-102143 Kiteworks Email Protection Gateway Unrestricted Upload of File with Dangerous Type
Unauthenticated attackers can upload arbitrary files to the filesystem via an unauthenticated administrative handler, though code execution requires additional vulnerabilities.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102143?
CVE-2026-102143 is a high-severity vulnerability in Accellion Kiteworks, published on 30 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An unauthenticated attacker could cause a file with attacker-controlled content to be written to the appliance filesystem through an administrative upload handler that did not properly authenticate the request. This did not by itself result in code execution, which would require a separate vulnerability to place the file in an executable location.
Which versions are affected by CVE-2026-102143?
It affects 1 product.
Products include Accellion Kiteworks.
How do I fix CVE-2026-102143?
No fix has been published for CVE-2026-102143 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-102143 being exploited?
There is no known exploitation of CVE-2026-102143 in the wild and no public exploit code.
Other vulnerabilities in Accellion Kiteworks
- CVE-2026-102115 Kiteworks Core Authentication Bypass in the Password Reset Workflow
- CVE-2026-102149 Kiteworks Email Protection Gateway Improper Access Control
- CVE-2026-102147 Kiteworks Core Administrative Account Takeover through Stored Cross-site Scripting (XSS)
- CVE-2026-102095 Kiteworks Email Protection Gateway server-side request forgery
- CVE-2026-102102 Kiteworks Email Protection Gateway server-side request forgery