CVE-2026-111227
Netgate pfSense CE through 2.9.0 CRLF Injection via services_unbound_acls.php
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| 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
0 ≤ 2.9.0
References
github.com: https://github.com/abraxas/pfsense-unbound-acl-crlf abraxaslabs.tech: https://abraxaslabs.tech/research/pfsense-ce-leftovers github.com: https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/unbound.inc#L1094-L1112 github.com: https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/services_unbound_acls.php#L121-L142 vulncheck.com: https://www.vulncheck.com/advisories/netgate-pfsense-ce-through-2.9.0-crlf-injection-via-services-unbound-acls-php
Credits
Abraxas Labs