CVE-2026-109786 | fail2ban up to 1.1.1 sshd filter sshd.conf input validation

October 13, 2026 Yanac

A vulnerability labeled as critical has been found in fail2ban up to 1.1.1. Affected by this issue is some unknown functionality of the file config/filter.d/sshd.conf of the component sshd filter. The manipulation results in improper input validation.

This vulnerability is reported as CVE-2026-109786. The attack can be launched remotely. No exploit exists.

It is best practice to apply a patch to resolve this issue.VulDB Recent EntriesRead More