https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2021-32749.htmlhttps://patchthecve.com/cve/CVE-2021-32749.htmlWed, 17 Jun 2026 03:53:33 +0000MEDIUM 6.1: fail2ban is a daemon to ban hosts that cause multiple authentication errors. In versions 0.9.7 and prior, 0.10.0 through 0.10.6, and 0.11.0 through 0.11.2, there is a vulnerability that leads to possible remote code execution in the mailing action mail-whois. Command `mail` from mailutils package ushttps://patchthecve.com/cve/CVE-2009-5023.htmlhttps://patchthecve.com/cve/CVE-2009-5023.htmlTue, 16 Jun 2026 23:14:50 +0000MEDIUM 4.7: The (1) dshield.conf, (2) mail-buffered.conf, (3) mynetwatchman.conf, and (4) mynetwatchman.conf actions in action.d/ in Fail2ban before 0.8.5 allows local users to write to arbitrary files via a symlink attack on temporary files with predictable names, as demonstrated by /tmp/fail2ban-mail.txt.https://patchthecve.com/cve/CVE-2013-7177.htmlhttps://patchthecve.com/cve/CVE-2013-7177.htmlWed, 17 Jun 2026 00:01:29 +0000MEDIUM 5.0: config/filter.d/cyrus-imap.conf in the cyrus-imap filter in Fail2ban before 0.8.11 allows remote attackers to trigger the blocking of an arbitrary IP address via a crafted e-mail address that matches an improperly designed regular expression.https://patchthecve.com/cve/CVE-2013-7176.htmlhttps://patchthecve.com/cve/CVE-2013-7176.htmlWed, 17 Jun 2026 00:01:29 +0000MEDIUM 5.0: config/filter.d/postfix.conf in the postfix filter in Fail2ban before 0.8.11 allows remote attackers to trigger the blocking of an arbitrary IP address via a crafted e-mail address that matches an improperly designed regular expression.https://patchthecve.com/cve/CVE-2013-2178.htmlhttps://patchthecve.com/cve/CVE-2013-2178.htmlTue, 16 Jun 2026 23:52:53 +0000MEDIUM 5.0: The apache-auth.conf, apache-nohome.conf, apache-noscript.conf, and apache-overflows.conf files in Fail2ban before 0.8.10 do not properly validate log messages, which allows remote attackers to block arbitrary IP addresses via certain messages in a request.https://patchthecve.com/cve/CVE-2012-5642.htmlhttps://patchthecve.com/cve/CVE-2012-5642.htmlTue, 16 Jun 2026 23:47:08 +0000HIGH 7.5: server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.