CVE-2026-86930 Information disclosure in FileMaker Server

Critical 9.1 Published 23 Sep 2026 Updated 24 Sep 2026

An attacker can disclose process memory by uploading a crafted image to a container field in FileMaker Server for Linux.

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-2026-86930?

CVE-2026-86930 is a critical vulnerability in Claris FileMaker Server, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An out-of-bounds read vulnerability in FileMaker Server for Linux allowed an attacker uploading a specially crafted image file to a container field to disclose process memory during thumbnail generation in FileMaker WebDirect. This vulnerability is addressed in FileMaker Server version 26.0.3.

Weakness: CWE-125

Which versions are affected by CVE-2026-86930?

It affects 1 product.

Products include Claris Filemaker Server.

How do I fix CVE-2026-86930?

No fix has been published for CVE-2026-86930 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-86930 being exploited?

There is no known exploitation of CVE-2026-86930 in the wild and no public exploit code.

Sources

Also known as GHSA-xgrq-55wj-qj6g.