CVE-2025-46320 Cross-site scripting in FileMaker Server

Medium 6.1 Published 24 Feb 2026 Updated 24 Feb 2026

Cross-site scripting in FileMaker WebDirect allows attackers to execute remote code and gain unauthorized access, requiring an upgrade to patched server versions.

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-2025-46320?

CVE-2025-46320 is a medium-severity cross-site scripting vulnerability in Claris FileMaker Server, published on 24 Feb 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 cross-site scripting (XSS) vulnerability in a FileMaker WebDirect custom homepage could lead to unauthorized access and remote code execution. This vulnerability has been fully addressed in FileMaker Server 22.0.4 and FileMaker Server 21.1.7.

Weakness: CWE-79

Which versions are affected by CVE-2025-46320?

It affects 1 product.

Products include Claris Filemaker Server.

How do I fix CVE-2025-46320?

No fix has been published for CVE-2025-46320 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-2025-46320 being exploited?

There is no known exploitation of CVE-2025-46320 in the wild and no public exploit code.

Sources

Also known as GHSA-mjm8-6393-j3wg.