XSS in Netgate Pfsense Ce
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/abraxas/pfsense-separator-color-xss (technical-description, exploit)
- abraxaslabs.tech/research/pfsense-ce-leftovers (technical-description)
- github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/et… (technical-description)
- github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/us… (technical-description)
- www.vulncheck.com/advisories/netgate-pfsense-ce-2.3.0-through-2.9.0-stored-xss-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111232?
- CVE-2026-111232 is a medium-severity vulnerability in Netgate Pfsense Ce, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-10-15.
- How severe is CVE-2026-111232?
- Medium severity. CVSS v3 base score is 4.8 out of 10.