CVE-2026-108161

EUVD-2026-96316

10.10.2026, 14:16

FusionPBX through 5.6.5 contains an OS command injection vulnerability in call_recordings::download() that allows unauthenticated attackers to execute commands by placing calls with malicious caller ID values. When the record_name filename template is enabled, attackers can embed shell metacharacters like $(...) in the Caller-ID name or number, executing commands as the web server user once a privileged user downloads multiple recordings as a ZIP.

OS Command Injection

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
VulnCheck	CNA	7.5 HIGH	NETWORK	HIGH	NONE	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
fusionpbx	fusionpbx	𝑥 ≤ 5.6.5	CNA

Common Weakness Enumeration

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

References

https://github.com/fusionpbx/fusionpbx

https://github.com/fusionpbx/fusionpbx/blob/ac4cd29870e3af67506390800904e262fee7e0ec/app/call_recordings/resources/classes/call_recordings.php#L736-L776

https://github.com/fusionpbx/fusionpbx/commit/074a69310100f95171c67db62643cc2aac4f4d37

https://www.vulncheck.com/advisories/fusionpbx-through-5.6.5-os-command-injection-via-caller-id-in-recording-zip-download