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CVE-2026-109786

🗓️ 13 Oct 2026 02:40:13Reported by Debian Security Bug TrackerType 
debiancve
 debiancve
🔗 security-tracker.debian.org👁 1 Views

In fail2ban 0.10.5 through 1.1.1 before ddd879d, the sshd filter (config/filter.d/sshd.conf) accepts an "on " suffix after the host address. Because OpenSSH logs the offered username verbatim, a remote unauthenticated attacker can use a username s...

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OSOS VersionArchitecturePackagePackage VersionFilename
Debian12allfail2ban1.0.2-2fail2ban_1.0.2-2_all.deb
Debian13allfail2ban1.1.0-8fail2ban_1.1.0-8_all.deb
Debian14allfail2ban1.1.1-1fail2ban_1.1.1-1_all.deb
Debian999allfail2ban1.1.1-1fail2ban_1.1.1-1_all.deb

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13 Oct 2026 02:40Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.15.3
EPSS0.00314
1