What is CVE-2019-16990?

CVE-2019-16990 is a medium-severity vulnerability in Fusionpbx, classified under Path Traversal. CVSS score: 6.5/10. Published 2019-10-21.

How severe is CVE-2019-16990?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Path Traversal in Fusionpbx

CVE-2019-16990

In FusionPBX up to v4.5.7, the file app/music_on_hold/music_on_hold.php uses an unsanitized "file" variable coming from the URL, which takes any pathname (base64 encoded) and allows a download of it.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2019-10-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.013 (68.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Fusionpbx

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/fusionpbx/fusionpbx/commit/95ed18aa9d781f232f5686a9027bb6f677c9b8da (Patch)
resp3ctblog.wordpress.com/2019/10/19/fusionpbx-path-traversal-3/ (Third Party Advisory)

Frequently asked questions

What is CVE-2019-16990?: CVE-2019-16990 is a medium-severity vulnerability in Fusionpbx, classified under Path Traversal. CVSS score: 6.5/10. Published 2019-10-21.
How severe is CVE-2019-16990?: Medium severity. CVSS v3 base score is 6.5 out of 10.