CVE-2026-119423: opnsense core: OPNsense core before 26.7.8 contains a log injection vulnerability that allows unauthenticated attackers to plant…

OPNsense core before 26.7.8 contains a log injection vulnerability that allows unauthenticated attackers to plant victim IP addresses in the lockouthandler by submitting crafted WebGUI login usernames. Attackers can submit usernames like 'Invalid user ' repeatedly to add the victim to the...

PT-2026-133476

Name of the Vulnerable Software and Affected Versions OPNsense core versions prior to 26.7.8 Description A log injection issue exists in the lockout handler that allows unauthenticated attackers to manipulate the sshlockout table. By submitting crafted usernames via the WebGUI login, such as...

CVE-2026-63442 OPNsense: Log Forgery via Login Username CRLF in WebGUI Authentication → Pf Table IP Blocking

OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the unauthenticated WebGUI login usernamefld accepts carriage-return and line-feed characters that survive LOGAUTH processing through syslog-ng-lockout.conf into the syslog-ng program destination feeding...

CVE-2026-63442

Prior to version 26.1.11 , OPNsense is vulnerable to a log forgery flaw due to the unauthenticated WebGUI login usernamefld accepting carriage-return and line-feed characters. These characters survive LOG_AUTH processing and are injected into the syslog-ng destination feeding the lockout_handler....

CVE-2026-63442 OPNsense: Log Forgery via Login Username CRLF in WebGUI Authentication → Pf Table IP Blocking

OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the unauthenticated WebGUI login usernamefld accepts carriage-return and line-feed characters that survive LOGAUTH processing through syslog-ng-lockout.conf into the syslog-ng program destination feeding...

CVE-2026-63442: Improper Output Neutralization for Logs

OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the unauthenticated WebGUI login usernamefld accepts carriage-return and line-feed characters that survive LOGAUTH processing through syslog-ng-lockout.conf into the syslog-ng program destination feeding...