{"id":"CVE-2026-111227","state":"PUBLISHED","title":"Netgate pfSense CE through 2.9.0 CRLF Injection via services_unbound_acls.php","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.","publishedAt":"2026-10-15T18:46:26.531Z","updatedAt":"2026-10-21T01:10:35.133Z","severity":{"score":5.1,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L","source":"VulnCheck"},"assigner":"VulnCheck","products":["Netgate pfSense CE"],"affected":[{"vendor":"Netgate","product":"pfSense CE","packageURL":"pkg:github/pfsense/pfsense","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.9.0","versionType":"semver"}],"collectionURL":"https://github.com","repo":"https://github.com/pfsense/pfsense"}],"references":["https://github.com/abraxas/pfsense-unbound-acl-crlf","https://abraxaslabs.tech/research/pfsense-ce-leftovers","https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/unbound.inc#L1094-L1112","https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/services_unbound_acls.php#L121-L142","https://www.vulncheck.com/advisories/netgate-pfsense-ce-through-2.9.0-crlf-injection-via-services-unbound-acls-php"],"weaknesses":["CWE-93"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/111xxx/CVE-2026-111227.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-111227","state":"PUBLISHED","datePublished":"2026-10-15T18:46:26.531Z","dateUpdated":"2026-10-21T01:10:35.133Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-15T18:21:22.605Z"},"containers":{"cna":{"title":"Netgate pfSense CE through 2.9.0 CRLF Injection via services_unbound_acls.php","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Netgate","product":"pfSense CE","packageURL":"pkg:github/pfsense/pfsense","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.9.0","versionType":"semver"}],"collectionURL":"https://github.com","repo":"https://github.com/pfsense/pfsense"}],"references":[{"url":"https://github.com/abraxas/pfsense-unbound-acl-crlf","tags":["exploit","technical-description"]},{"url":"https://abraxaslabs.tech/research/pfsense-ce-leftovers","tags":["technical-description"]},{"url":"https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/unbound.inc#L1094-L1112","tags":["technical-description"]},{"url":"https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/services_unbound_acls.php#L121-L142","tags":["technical-description"]},{"url":"https://www.vulncheck.com/advisories/netgate-pfsense-ce-through-2.9.0-crlf-injection-via-services-unbound-acls-php","name":"VulnCheck Advisory: Netgate pfSense CE through 2.9.0 CRLF Injection via services_unbound_acls.php","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"LOW","subAvailabilityImpact":"LOW","baseScore":5.1,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"LOW","baseScore":5.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-93","lang":"en","description":"Improper Neutralization of CRLF Sequences ('CRLF Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-15T18:46:26.531Z"},"datePublic":"2026-10-15T05:50:18.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:netgate:pfsense:*:*:*:*:*:*:*:*","versionEndIncluding":"2.9.0"}]}]}],"credits":[{"lang":"en","value":"Abraxas Labs","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-21T01:10:23.044863Z","id":"CVE-2026-111227","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-21T01:10:35.133Z"}}]}}}