CVE-2025-55209CWE-79

FreePBX UCP is Vulnerable to Stored XSS Through its User Control Panel

Medium · published September 4, 2025

CVSS v4.0
5.1
EPSS
0%
Percentile
28.0
In the wild
Unconfirmed
What it is

contactmanager is a module for FreePBX@, which is an open source GUI that controls and manages Asterisk© (PBX). In versions 15.0.14 and below, 16.0.0 through 16.0.26.4 and 17.0.0 through 17.0.5, a stored cross-site scripting (XSS) vulnerability in FreePBX allows a low-privileged User Control Panel (UCP) user to inject malicious JavaScript into the system. The malicious code executes in the context of an administrator when they interact with the affected component, leading to session hijacking and potential privilege escalation. This issue is fixed in versions 15.0.14, 16.0.27 and 17.0.6.

The record
Technical detail
CVSS v4.0
5.1 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L
EPSS
0.00355 · 28.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-09-04T22:50Z
EPSS history
Timeline
  • 04 SEP 22:50Z
    FreePBX UCP is Vulnerable to Stored XSS Through its User Control Panel
    cvelistv5