Is CVE-2026-111227 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-111227?

CVE-2026-111227 has a CVSS v3 severity of MEDIUM (5.5).

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CVE-2026-111227

Description

Netgate pfSense CE through 2.9.0 contains a CRLF injection vulnerability in services_unbound_acls.php that allows authenticated users with the DNS Resolver: Access Lists privilege to inject Unbound configuration directives. Attackers can embed CR/LF characters in the aclname or aclaction fields written to access_lists.conf to add local-data, local-zone, or forward-zone directives and control DNS answers served to LAN clients.