CVE-2024-27794 Cross-site scripting in FileMaker Server

Medium 4.3 Published 15 Apr 2024 Updated 2 Aug 2024

Reflected XSS in FileMaker Server WebDirect login allows attackers to execute scripts in user sessions, potentially leading to account takeover.

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-2024-27794?

CVE-2024-27794 is a medium-severity cross-site scripting vulnerability in Claris FileMaker Server, published on 15 Apr 2024. 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

Claris FileMaker Server before version 20.3.2 was susceptible to a reflected Cross-Site Scripting vulnerability due to an improperly handled parameter in the FileMaker WebDirect login endpoint. The vulnerability was resolved in FileMaker Server 20.3.2 by escaping the HTML contents of the login error message on the login page.

Weakness: CWE-79

Which versions are affected by CVE-2024-27794?

It affects 1 product.

Products include Claris Filemaker Server.

How do I fix CVE-2024-27794?

No fix has been published for CVE-2024-27794 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-2024-27794 being exploited?

There is no known exploitation of CVE-2024-27794 in the wild and no public exploit code.

Sources

Also known as GHSA-2hh4-qfh8-22w2.