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CVE-2026-102106 Kiteworks Email Protection Gateway improper authentication

Critical 9.1 Published Updated

An attacker can bypass administrator authentication to create, modify, or delete internal users and managed domains in Kiteworks Email Protection Gateway.

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-2026-102106?

CVE-2026-102106 is a critical authentication bypass 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

Improper authentication in a Kiteworks Email Protection Gateway administrative service. An administrative service in Kiteworks Email Protection Gateway did not consistently enforce administrator authentication, so the required password check could be bypassed. An attacker who referenced a valid administrator account could potentially create, modify, or delete internal users and managed domains and change their security-feature configuration without authenticating; deleting a managed domain also removes its user accounts and could lock administrators out of the gateway.

Weakness: CWE-287

Which versions are affected by CVE-2026-102106?

It affects 1 product.

Products include Accellion Kiteworks.

How do I fix CVE-2026-102106?

No fix has been published for CVE-2026-102106 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-102106 being exploited?

There is no known exploitation of CVE-2026-102106 in the wild and no public exploit code.

All Accellion Kiteworks vulnerabilities

Sources

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