vulnerability
pfSense: pfSense-SA-17_04.webgui: DHCP Lease XSS vulnerability in the WebGUI
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:N/C:P/I:P/A:N) | Apr 26, 2016 | Aug 25, 2017 | Feb 18, 2025 |
Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
Apr 26, 2016
Added
Aug 25, 2017
Modified
Feb 18, 2025
Description
A Cross-Site Scripting (XSS) vulnerability was found in the DHCP lease display
in the pfSense software WebGUI on version 2.3.3-p1 and earlier.
If a malicious client submits a hostname containing HTML, it is displayed to
the user viewing the DHCP leases without encoding.
Due to the lack of proper encoding on the affected variable succeptible to XSS,
arbitrary JavaScript can be executed in the user's browser. The user's session
cookie or other information from the session may be compromised.
Solution
pfsense-upgrade-latest
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.