OS Command Injection Vulnerability in FusionPBX by FusionPBX
CVE-2026-108161

7.7HIGH

Key Information:

Vendor

Fusionpbx

Status
Fusionpbx
Vendor
CVE Published:
10 October 2026

What is CVE-2026-108161?

FusionPBX versions up to 5.6.5 exhibit an OS command injection vulnerability located in the call_recordings::download() function. This flaw enables unauthenticated attackers to execute arbitrary commands by injecting malicious caller ID values into the application. When the record_name filename template is activated, attackers can leverage shell metacharacters such as $(...) in their Caller-ID name or number. Consequently, commands executed as the web server user occur when a privileged user downloads multiple recordings bundled as a ZIP file. This serious oversight can lead to unauthorized system access and exploitation.

Affected Version(s)

fusionpbx 0 <= 5.6.5

References

https://github.com/fusionpbx/fusionpbx/commit/074a6931010...
patch
https://github.com/fusionpbx/fusionpbx/blob/ac4cd29870e3a...
technical-description
https://github.com/fusionpbx/fusionpbx
product

CVSS V4

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dilshod Gofurov
.