CVE-2026-102101 Kiteworks Core deserialization of untrusted data
Kiteworks Core allows remote code execution via unsafe deserialization if an attacker can influence input data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102101?
CVE-2026-102101 is a high-severity unsafe deserialization vulnerability in Accellion Kiteworks, published on 30 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Kiteworks Core before version 9.5.0 is vulnerable to Deserialization of Untrusted Data. A deserialization weakness in Kiteworks Core could, under certain conditions, allow crafted data to be deserialized unsafely, potentially resulting in remote code execution on the appliance. Exploitation depends on an attacker first being able to influence the affected data, so this issue is not exploitable on its own.
Weakness: CWE-502
Which versions are affected by CVE-2026-102101?
It affects 1 product.
Products include Accellion Kiteworks.
How do I fix CVE-2026-102101?
No fix has been published for CVE-2026-102101 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-102101 being exploited?
There is no known exploitation of CVE-2026-102101 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