CVE-2026-119560 | BDVDB-2026-398521 Detail
opnsensecore
Description#
OPNsense core through 26.7.8 contains a configuration injection vulnerability that allows authenticated users to append ntpd.conf directives by embedding newlines in the fudge and refid fields. Attackers holding the page-services-ntp-gps or PPS privilege can submit CR/LF characters via services_ntpd_gps.php or services_ntpd_pps.php to inject directives loaded by ntpd running as root.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact low. Attack vector: network.
Weaknesses#
- CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
References#
- https://github.com/opnsense/core/blob/26.7.8/src/etc/inc/plugins.inc.d/ntpd.inc#L285-L312
- https://github.com/opnsense/core/blob/26.7.8/src/www/services_ntpd_gps.php#L49
- https://github.com/opnsense/core/security/advisories/GHSA-fq94-cxvc-9r7w
- https://abraxaslabs.tech/research/opnsense-ntp-gps-fudge
- https://github.com/opnsense/core
- https://www.vulncheck.com/advisories/opnsense-core-through-26.7.8-ntp-configuration-injection-via-gps-and-pps-fudge-fields
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.