CVE-2020-19201
Netgate pfSense 2.4.4 - p2 is affected by: Cross Site Scripting (XSS). The impact is:...
A Stored Cross-Site Scripting (XSS) vulnerability was found in status_filter_reload.php, a page in the pfSense software WebGUI, on Netgate pfSense version 2.4.4-p2 and earlier. The page did not encode output from the filter reload process, and a stored XSS was possible via the descr (description) parameter on NAT rules.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A Stored Cross-Site Scripting (XSS) vulnerability was found in status_filter_reload.php, a page in the pfSense software WebGUI, on Netgate pfSense version 2.4.4-p2 and earlier. The page did not encode output from the filter reload process, and a stored XSS was possible via the descr (description) parameter on NAT rules.
- Record
CVE-2020-19201- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
A Stored Cross-Site Scripting (XSS) vulnerability was found in status_filter_reload.php, a page in the pfSense software WebGUI, on Netgate pfSense version 2.4.4-p2 and earlier. The page did not encode output from the filter reload process, and a stored XSS was possible via the descr (description) parameter on NAT rules.
- Record
CVE-2020-19201- Updated
- 2026-11-02
EUVDEUVD-2020-11108 No score
A Stored Cross-Site Scripting (XSS) vulnerability was found in status_filter_reload.php, a page in the pfSense software WebGUI, on Netgate pfSense version 2.4.4-p2 and earlier. The page did not encode output from the filter reload process, and a stored XSS was possible via the descr (description) parameter on NAT rules.
- Record
EUVD-2020-11108- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5rh9-j8fm-2vv4 No score
Netgate pfSense 2.4.4 - p2 is affected by: Cross Site Scripting (XSS). The impact is:...
Netgate pfSense 2.4.4 - p2 is affected by: Cross Site Scripting (XSS). The impact is: Authenticated Stored XSS in NAT Configuration (local). The component is: Description Text box, Status/Reload Filter Page. The attack vector is: An attacker get access to the victim's session by performing the CSRF and gather the cookie and session ids or possibly can change the victims NAT configuration using this Stored XSS. This attack can possibly spoof the victim's informations.
- Record
GHSA-5rh9-j8fm-2vv4- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-19201 is a medium vulnerability (CVSS 5.4) in Netgate Pfsense, published July 12, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.45%, the 89th percentile. No source names a fixed version.