Vulnerability · Published Oct 15, 2026 · Assigned by VulnCheck

CVE-2026-111232Netgate pfSense CE 2.3.0 through 2.9.0 Stored XSS via Separator Color

Medium 4.8

In plain English

A medium-severity cross-site scripting in pfSense CE from Netgate. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).

Severity (CVSS 3.1)4.8Medium

Exploit odds (30 days)1.0%top 37.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Netgate pfSense CE 2.3.0 through 2.9.0 contains a stored cross-site scripting vulnerability that allows authenticated users with Firewall: Rules or NAT: Port Forward privileges to inject scripts via the separator color field. Attackers can submit a crafted separator[] color value that display_separator() renders unencoded into class attributes, executing in administrators' browsers to perform WebGUI actions with their privileges.

Affected products (as reported)

Vendor	Product	Versions
Netgate	pfSense CE	2.3.0 – through 2.9.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

References

https://github.com/abraxas/pfsense-separator-color-xss exploit, technical-description
https://abraxaslabs.tech/research/pfsense-ce-leftovers technical-description
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/filter.inc#L6238-L6252 technical-description
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.php#L236-L245 technical-description
VulnCheck Advisory: Netgate pfSense CE 2.3.0 through 2.9.0 Stored XSS via Separator Color third-party-advisory