CVE-2019-16966

Name: CVE-2019-16966
Creator: NVD / NIST
Published: 2019-10-21T19:15:11.03+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.14%

Last modified Jun 17, 2026

CVE-2019-16966 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. An issue was discovered in Contactmanager 13.x before 13.0.45.3, 14.x before 14.0.5.12, and 15.x before 15.0.8.21 for FreePBX 14.0.10.3. In the Contactmanager class (html\admin\modules\contactmanager\Contactmanager.class.php), an unsanitized group variable coming from the URL is reflected in HTML on 2 occasions, leading to XSS. EPSS estimates a 1.14% chance of exploitation in the next 30 days.

Description

An issue was discovered in Contactmanager 13.x before 13.0.45.3, 14.x before 14.0.5.12, and 15.x before 15.0.8.21 for FreePBX 14.0.10.3. In the Contactmanager class (html\admin\modules\contactmanager\Contactmanager.class.php), an unsanitized group variable coming from the URL is reflected in HTML on 2 occasions, leading to XSS. It can be requested via a GET request to /admin/ajax.php?module=contactmanager.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

1.14%

62.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions	Update
Freepbx	Contactmanager	>= 13.0.2, < 13.0.45.3	—
Freepbx	Contactmanager	>= 14.0.1.1, < 14.0.5.12	—
Freepbx	Contactmanager	>= 15.0.2, < 15.0.8.21	—
Freepbx	Contactmanager	13.0.0	Beta1
Freepbx	Contactmanager	14.0.1	—
Sangoma	Freepbx	14.0.10.3	—

References

https://github.com/FreePBX/contactmanager/commit/99e5aa0050224289cfe64c9036f38ce2531bf633Patch, Third Party Advisory
https://issues.freepbx.org/browse/FREEPBX-20437Vendor Advisory
https://resp3ctblog.wordpress.com/2019/10/19/freepbx-xss-1/Patch, Vendor Advisory
https://github.com/FreePBX/contactmanager/commit/99e5aa0050224289cfe64c9036f38ce2531bf633Patch, Third Party Advisory
https://issues.freepbx.org/browse/FREEPBX-20437Vendor Advisory
https://resp3ctblog.wordpress.com/2019/10/19/freepbx-xss-1/Patch, Vendor Advisory

Timeline

Published: Oct 21, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-16966?

How severe is CVE-2019-16966?

CVE-2019-16966 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.14% probability of exploitation in the next 30 days.

How do I fix CVE-2019-16966?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-16966?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST