CVE-2026-111232

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.

CVSS 4.0

4.8CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

4.8CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS

1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2026-10-15

Modified

2026-10-21

Record from

the NVD, synced 2026-10-21

Affected

• pfsense:pfsense

References

• https://abraxaslabs.tech/research/pfsense-ce-leftovers
• https://github.com/abraxas/pfsense-separator-color-xss
• https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/filter.inc#L6238-L6252
• https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/firewall_rules.php#L236-L245
• https://www.vulncheck.com/advisories/netgate-pfsense-ce-2.3.0-through-2.9.0-stored-xss-via-separator-color

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