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Medium 2026-08-07

ConfigServer Security & Firewall (CSF) 16.18-1 — cPanel & WHM Update

cPanel CSF

Managesieve LFD alert fix Added managesieve-login to csf.pignore to prevent excessive LFD resource alerts triggered by the Dovecot managesieve plugin (CPANEL-52448). For a full list of changes, read the ConfigServer Security & Firewall (CSF) change log.

Affected Versions

16.18-1

Managesieve LFD alert fix Added managesieve-login to csf.pignore to prevent excessive LFD resource alerts triggered by the Dovecot managesieve plugin (CPANEL-52448). For a full list of changes, read the ConfigServer Security & Firewall (CSF) change log.

How to Apply the Fix

Update the affected packages on your server to the patched release, then restart the relevant services.

sudo /scripts/upcp --force
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