# CVE-2026-54675: FreePBX path traversal in soundlang file upload leading to RCE

Source: https://junglewise.ai/threats/cve-2026-54675-freepbx-is-an-open-source-ip-pbx-prior-to-versions-16-0-10-and-17  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-28. Updated: 2026-09-28  
License: CC BY 4.0 with a link back

CVE-2026-54675 · Severity: info · Published 2026-09-28

FreePBX is an open-source phone system (IP PBX) that organizations use to manage voice communications. An authenticated attacker can upload specially crafted sound files that exploit insufficient path sanitization to write malicious PHP code directly to the web server directory, leading to complete system compromise and remote code execution. Only users with valid administrator credentials can exploit this vulnerability.

Technologies: [FreePBX](https://junglewise.ai/threats/technologies/freepbx-freepbx). Vendors: [FreePBX](https://junglewise.ai/threats/vendors/freepbx).

## Quick answers

**Is CVE-2026-54675 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-54675 being exploited in the wild.

**How severe is CVE-2026-54675?** Informational severity, published 28 September 2026.

**Which products and versions are affected?** FreePBX 16.x prior to 16.0.10; 17.x prior to 17.0.5.

**Is there a fix for CVE-2026-54675?** A patch was published on 2026: Fixed in versions 16.0.10 and 17.0.5 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-54675 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-54675?** Check whether you run FreePBX 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

The soundlang module in FreePBX contains a path traversal vulnerability in file upload and conversion functionality that fails to properly sanitize file paths. An authenticated attacker can abuse the upload mechanism to place PHP files outside their intended directory via path traversal sequences (e.g., ../ characters), achieving arbitrary code execution as the FreePBX service user (typically asterisk). The issue is patched in FreePBX versions 16.0.10 and 17.0.5.

## Affected products

- FreePBX FreePBX 16.x prior to 16.0.10; 17.x prior to 17.0.5

## Timeline

- 2026-09-28: disclosed
- 2026: patched: Fixed in versions 16.0.10 and 17.0.5

## References

- [https://github.com/FreePBX/security-reporting/security/advisories/GHSA-95gm-cmxf-cv8v](https://github.com/FreePBX/security-reporting/security/advisories/GHSA-95gm-cmxf-cv8v)

## Related threats

- [FreePBX API command injection in documentation generator](https://junglewise.ai/threats/cve-2026-75600-freepbx-is-an-open-source-ip-pbx-prior-to-version-17-0-9)
- [FreePBX Superfecta arbitrary PHP code execution](https://junglewise.ai/threats/cve-2026-54710-freepbx-is-an-open-source-ip-pbx-prior-to-versions-16-0-40-and-17)
- [FreePBX backup module arbitrary code execution via path traversal](https://junglewise.ai/threats/cve-2026-54708-freepbx-is-an-open-source-ip-pbx-prior-to-versions-16-0-72-and-17)
- [FreePBX command injection in User Control Panel](https://junglewise.ai/threats/cve-2026-54674-freepbx-is-an-open-source-ip-pbx-prior-to-versions-16-0-39-and-17)
- [FreePBX Music on Hold module command injection](https://junglewise.ai/threats/cve-2026-45562-freepbx-is-an-open-source-ip-pbx-prior-to-versions-16-0-4-and-17)