Zitat von Forum am 5. September 2022, 00:00 Uhr

pfSense pfBlockerNG through 2.1.4_26 allows remote attackers to execute arbitrary OS commands as root via shell metacharacters in the HTTP Host header. NOTE: 3.x is unaffected.

References
https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html
https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/