CVE-2026-54708 Authenticated Remote Code Execution via Path Traversal in FreePBX Backup Module
Authenticated attackers can exploit path traversal in the FreePBX backup module to upload malicious files and execute arbitrary code on the server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54708?
CVE-2026-54708 is a high-severity path traversal vulnerability in Sangoma Freepbx, published on 28 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
FreePBX is an open source IP PBX. Prior to versions 16.0.72 and 17.0.7, a critical vulnerability exists in the FreePBX backup Module that allows authenticated attackers to execute arbitrary code on the server. Authentication with a known username that has sufficient access permissions and/or write access to backup files is required. This vulnerability is caused by improper path sanitization in the backup restore functionality, enabling attackers to upload malicious PHP files to the web root directory. This issue has been patched in versions 16.0.72 and 17.0.7.
Which versions are affected by CVE-2026-54708?
It affects 1 product.
Products include Sangoma Freepbx.
How do I fix CVE-2026-54708?
No fix has been published for CVE-2026-54708 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-54708 being exploited?
There is no known exploitation of CVE-2026-54708 in the wild and no public exploit code.
Other vulnerabilities in Sangoma Freepbx
- CVE-2025-57819 Sangoma FreePBX Authentication Bypass
- CVE-2019-19006 Sangoma FreePBX Improper Authentication
- CVE-2026-73663 FreePBX: Unauthenticated SQL injection in FreePBX missedcall via inbound Caller ID name leads to administrator takeover
- CVE-2026-73665 FreePBX UCP: Unauthenticated remote code execution via socket.io namespace auth bypass and AMI action injection
- CVE-2026-46376 FreePBX: Unauthenticated Use of Hard-Coded Credentials Vulnerability in FreePBX UCP Interface
Sources
Also known as GHSA-5hhg-w366-g6fh.