What is CVE-2019-19387?

CVE-2019-19387 is a medium-severity vulnerability in Fusionpbx, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-11-29.

How severe is CVE-2019-19387?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Fusionpbx

CVE-2019-19387

A cross-site scripting (XSS) vulnerability in app/fifo_list/fifo_interactive.php in FusionPBX 4.4.1 allows remote attackers to inject arbitrary web script or HTML via the c parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-11-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Fusionpbx — versions 4.4.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

gist.github.com/xax007/28e7326acfae677be0b351216888e522 (Exploit, Patch, Third Party Advisory)
github.com/fusionpbx/fusionpbx/commit/44edbfe7a7e256d1b80448026617365a40c92c61 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2019-19387?: CVE-2019-19387 is a medium-severity vulnerability in Fusionpbx, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-11-29.
How severe is CVE-2019-19387?: Medium severity. CVSS v3 base score is 6.1 out of 10.