# CVE-2026-43752: Claris FileMaker Server code execution in Open Source LLM setup

Source: https://junglewise.ai/threats/cve-2026-43752-claris-filemaker-server-code-execution-in-open-source-llm-setup  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-09. Updated: 2026-07-09  
License: CC BY 4.0 with a link back

CVE-2026-43752 · Severity: info · Published 2026-07-09

Claris FileMaker Server, a platform used for hosting and managing custom business applications, contains a security flaw in its administrative console. An authorized administrator could potentially take full control of the underlying server by uploading a malicious file through the Large Language Model (LLM) setup tool. This could lead to a complete compromise of the server, including the theft or destruction of hosted business data.

Technologies: [Claris FileMaker Server](https://junglewise.ai/threats/technologies/filemaker-server). Vendors: [Claris](https://junglewise.ai/threats/vendors/claris).

## Quick answers

**Is CVE-2026-43752 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-43752 being exploited in the wild.

**How severe is CVE-2026-43752?** Informational severity, published 9 July 2026.

**Which products and versions are affected?** Claris FileMaker Server before 26.0.1.

**Is there a fix for CVE-2026-43752?** A patch was published on 2026-07-09: Fixed in version 26.0.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-43752 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-43752?** Check whether you run Claris FileMaker Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An arbitrary code execution vulnerability exists in Claris FileMaker Server due to insufficient validation during file uploads in the Open Source LLM setup feature. An authenticated attacker with administrative privileges can upload a malicious file (such as a Miniforge installer or similar executable) via the Admin Console to execute commands with the privileges of the server process. This bypasses intended restrictions on system-level modifications. The vulnerability is resolved in FileMaker Server version 26.0.1 by improving upload validation and handling within the Miniforge installer integration.

## Affected products

- Claris FileMaker Server before 26.0.1

## Timeline

- 2026-07-09: advisory: Initial disclosure by Apple/Claris
- 2026-07-09: patched: Fixed in version 26.0.1

## References

- [https://community.claris.com/en/s/article/Arbitrary-Code-Execution-Vulnerability-Addressed-in-FileMaker-Server-via-Miniforge-Installer-Upload](https://community.claris.com/en/s/article/Arbitrary-Code-Execution-Vulnerability-Addressed-in-FileMaker-Server-via-Miniforge-Installer-Upload)

## Related threats

- [FileMaker Server authorization bypass in Web Publishing Engine](https://junglewise.ai/threats/cve-2026-86934-an-authorization-bypass-vulnerability-in-the-filemaker-server-web)
- [FileMaker Server out-of-bounds read in image processing](https://junglewise.ai/threats/cve-2026-86930-an-out-of-bounds-read-vulnerability-in-filemaker-server-for-linux)
- [Claris FileMaker Server heap buffer overflow in database block parsing](https://junglewise.ai/threats/cve-2026-86926-a-heap-buffer-overflow-vulnerability-in-the-filemaker-server)