CVE-2026-111228
Netgate pfSense CE 2.7.1 through 2.9.0 CRLF Injection via services_unbound_advanced.php
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
Netgate pfSense CE from 2.7.1 through 2.9.0 contains a CRLF injection vulnerability in services_unbound_advanced.php that allows authenticated users with DNS Resolver: Advanced privilege to inject Unbound directives. Attackers can embed CR/LF characters in the unvalidated sock_queue_timeout parameter, which is written raw into unbound.conf, to override local records and forwarding for all clients.
| CWE | CWE-93 |
| Vendor | netgate |
| Product | pfsense ce |
| Published | Oct 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
Netgate / pfSense CE
2.7.1 ≤ 2.9.0
References
github.com: https://github.com/abraxas/pfsense-unbound-sock-timeout abraxaslabs.tech: https://abraxaslabs.tech/research/pfsense-ce-leftovers github.com: https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/services_unbound_advanced.php#L178 github.com: https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/unbound.inc#L590 vulncheck.com: https://www.vulncheck.com/advisories/netgate-pfsense-ce-2.7.1-through-2.9.0-crlf-injection-via-services-unbound-advanced-php
Credits
Abraxas Labs