CVE-2026-111227CWE-93

CVE-2026-111227

Medium · published October 15, 2026

CVSS v3.1
5.5
EPSS
2%
Percentile
78.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L
CVSS v4.0
5.1 · 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
EPSS
0.01841 · 78.9th percentile
Weakness
CWE-93 · Improper Neutralization of CRLF Sequences ('CRLF Injection')
Published
2026-10-15T23:17Z
Affected products (1)
ProductVersionsFixed in
pfsense/pfsense≤ 2.9.0—
References (5)
https://abraxaslabs.tech/research/pfsense-ce-leftovers · [email protected]https://github.com/abraxas/pfsense-unbound-acl-crlf · [email protected]https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/unbound.inc#L1094-L1112 · [email protected]https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/services_unbound_acls.php#L121-L142 · [email protected]https://www.vulncheck.com/advisories/netgate-pfsense-ce-through-2.9.0-crlf-injection-via-services-unbound-acls-php · [email protected]
EPSS history
Timeline
  • 17 OCT 03:28Z
    EPSS moved — → 1%
    epss
  • 15 OCT 18:46Z
    Netgate pfSense CE through 2.9.0 CRLF Injection via services_unbound_acls.php
    cvelistv5
  • 15 OCT 18:46Z
    Netgate pfSense CE through 2.9.0 CRLF Injection via services_unbound_acls.php
    cvelistv5