CVE-2026-108161: FusionPBX through 5.6.5 OS Command Injection via Caller ID in Recording ZIP Download

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-10 · updated 2026-10-16
Weakness: CWE-78

Description

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.

Affected products

fusionpbx: through 5.6.5

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

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