MEDIUMCVSS 6.9
CVE-2026-119423
CVE-2026-119423 updated by NVD
Summary
OPNsense core before 26.7.8 contains a log injection vulnerability that allows unauthenticated attackers to plant victim IP addresses in the lockout_handler by submitting crafted WebGUI login usernames. Attackers can submit usernames like 'Invalid user ' repeatedly to add the victim to the sshlockout table, blocking SSH and WebGUI access and killing its pf states.
References
Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.
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