Stored Cross-Site Scripting Vulnerability in Netgate pfSense CE
CVE-2026-111232

4.8MEDIUM

Key Information:

Vendor

Netgate

Status
Pfsense Ce
Vendor
CVE Published:
15 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-111232?

Netgate pfSense CE versions 2.3.0 through 2.9.0 are susceptible to a stored cross-site scripting (XSS) vulnerability. This issue allows authenticated users with Firewall: Rules or NAT: Port Forward privileges to inject malicious scripts via the separator color field in the WebGUI. Attackers exploit this vulnerability by submitting a crafted separator[] color value, which is improperly rendered into class attributes by the display_separator() function. When this value is executed in the browser of an administrator, it can lead to unauthorized WebGUI actions, compromising the integrity of the firewall configuration.

Affected Version(s)

pfSense CE 2.3.0 <= 2.9.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-111232 - Proof of Concept

References

https://github.com/abraxas/pfsense-separator-color-xss
exploittechnical-description
https://abraxaslabs.tech/research/pfsense-ce-leftovers
technical-description
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a...
technical-description

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Abraxas Labs
.