RCE in Fusionpbx
CVE-2026-108161
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.
Vulnerability class: Command Injection (OS Command Injection)
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/fusionpbx/fusionpbx/commit/074a69310100f95171c67db62643cc2aac4f4d37 (patch)
- github.com/fusionpbx/fusionpbx/blob/ac4cd29870e3af67506390800904e262fee7e0ec/ap… (technical-description)
- github.com/fusionpbx/fusionpbx (product)
- www.vulncheck.com/advisories/fusionpbx-through-5.6.5-os-command-injection-via-c… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108161?
- CVE-2026-108161 is a high-severity vulnerability in Fusionpbx, classified under OS Command Injection. CVSS score: 7.5/10. Published 2026-10-10.
- How severe is CVE-2026-108161?
- High severity. CVSS v3 base score is 7.5 out of 10.