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CVE-2026-102147 Kiteworks Core Administrative Account Takeover through Stored Cross-site Scripting (XSS)

Critical 9.3 Published Updated

Unauthenticated attackers can inject scripts to hijack admin sessions and gain full control of Kiteworks Core.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-102147?

CVE-2026-102147 is a critical cross-site scripting vulnerability in Accellion Kiteworks, published on 30 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an unauthenticated attacker to store crafted content that later executes arbitrary JavaScript in the authenticated session of an administrator who views the affected page. This could have permitted the attacker to gain full administrative control, including the creation of a new administrative account.

Weakness: CWE-79

Which versions are affected by CVE-2026-102147?

It affects 1 product.

Products include Accellion Kiteworks.

How do I fix CVE-2026-102147?

No fix has been published for CVE-2026-102147 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-102147 being exploited?

There is no known exploitation of CVE-2026-102147 in the wild and no public exploit code.

All Accellion Kiteworks vulnerabilities

Sources

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